Dog Population Management Research Articles

The role of human behaviour change in companion animal management: A case study of Praia de Faro, Portugal

Abstract Humane dog and cat population management has relied on Trap, Neuter, Release (TNR) projects in an attempt to control or reduce free-roaming populations and improve the welfare of dogs and cats. It has been recognised that the root cause of dog and cat population and welfare issues is people and their attitudes and behaviours towards dogs and cats – whether this is through lack of responsible ownership leading to loss or abandonment, or programs that focus on single tools such as sterilisation. Failing to recognise the interdependency that exists between individual and community responsibility means that projects that rely solely on the actions of an individual or a small group, and do not involve the wider community, risk limiting their impact and sustainability. Typically, sterilisation projects regularly fail to address this issue. The concept of human behaviour change is beginning to be used in dog population management programs but is still largely unused and untested in cat population management programs. In 2013, a 4-year project in Praia de Faro, Portugal, started to explore how communities respond to a local program using community engagement tools to measure and evaluate changes in attitudes and behaviours towards owned and un-owned dogs and cats. The research question is: ‘does community involvement and participation in a project increase its chances of success in relation to improved welfare for animals?’ Results suggest improved dog and cat welfare, positive changes in attitudes and behaviours of the community, and increased community involvement.

Effectiveness of the trap-neuter-return method for free-roaming dog management in an urban protected area: Wildlife cannot wait

Free-roaming dogs (Canis familiaris) are invasive species that pose serious threats to wildlife, and this necessitates active management. In Taiwan, resistance to euthanizing shelter dogs has led to overcrowded shelters, which prompted a shift to trap-neuter-return (TNR) as the primary method for managing free-roaming dogs. Shoushan National Nature Park in Kaohsiung, Taiwan has experienced this problem and, therefore, implemented a high-intensity TNR program in 2018–2020. We evaluated effectiveness of TNR in dog population management and its applicability to wildlife conservation in this urban protected area. We conducted camera trapping surveys during 2014–2022 to estimate the population dynamics of dogs and wildlife. The camera traps collected 21,884 trap nights of data and 30,396 trap events of invasive and native mammals. The dog population increased significantly from 2014 to 2017 (relative abundance index (RAI): +318%; occupancy: +17%), which was probably attributed to the implementation of a no-kill policy. Afterwards, the population declined marginally from 2018 to 2021 following the TNR that was conducted (RAI: −29%; occupancy: −9%). In contrast, Reeves' muntjacs (Muntiacus reevesi) decreased significantly from its peak in 2014 to a low in 2022 (RAI: −96%; occupancy: −41%). Similarly, masked palm civets (Paguma larvata) also experienced a decline (RAI: −60%; occupancy: −25%). Population viability analysis predicted that maintaining a sterilization rate of > 75% for female dogs could theoretically control the dog population, but the 50–100 immigrants that entered the population each year would disrupt the effectiveness of the TNR treatment severely. We concluded that TNR was not sufficient in areas with conservation concerns. In addition to neutering, strategies to reduce immigration and to increase the number of dogs removed were crucial for effective management.

PROGRESSIVE CONTROL AND MANAGEMENT STRATEGIES IN THE ELIMINATION OF RABIES AMONG THE STRAY DOG (CANIS FAMILIARIS) POPULATION IN PAKISTAN

Stray dogs are integrally linked with rabies transmission, and a sizeable unmanaged dog population hinders rabies control program planners. Dog population management (DPM) is one of the best strategies to control rabies transmission, improve health management, and lower the population size of stray dogs. The threat of rabies is very serious due to free-roaming dogs. Foxes, skunks, groundhogs, raccoons, and house bats are rabies vector species and can carry rabies virus without showing any symptoms. Rabies is a life-threatening disease that affects thousands of losses worldwide every year. World Rabies Day is an international awareness campaign coordinated by the Global Alliance for Rabies Control (GARC). In Pakistan, there are reportedly 3 million stray dogs. More than one million dog bite cases are reported annually throughout Pakistan. About 600 dog bite cases are reported daily in the Sindh province, Pakistan. Due to an uncontrolled number of stray dogs, many serious problems arise related to public health, socio-economic, and political issues. The Animal Act of 1890 provides a specific defense against cruelty and establishes its importance in Pakistani culture. Developing long-term and supportable strategies is imperative to overcome the stray animal population worldwide. To overcome the rabies issue in Pakistan, the government should implement projects on breeding control of stray dogs through spaying and neutering surgeries. The government should also provide proper shelters for dogs and rabies vaccines. There is a need to be aware of basic preventive measures such as disinfectants and rabies vaccination. Public awareness, rabies vaccination, and dog sterilization at the national level are crucial factors in preventing rabies and managing the dog population in Pakistan.

The emergence of Rocky Mountain spotted fever in the southwestern United States and northern Mexico requires a binational One Health approach.

Rocky Mountain spotted fever (RMSF) is an international and quintessential One Health problem. This paper synthesizes recent knowledge in One Health, binational RMSF concerns, and veterinary and human medical perspectives to this fatal, reemerging problem. RMSF, a life-threatening tick-borne disease caused by the bacterium Rickettsia rickettsii, emerged during the first decade of the 21st century in impoverished communities in the southwestern US and northern Mexico. Lack of an index of suspicion, delay in diagnosis, and delayed initiation of antibiotic treatment contribute to fatality. Campaigns targeting dog neutering, restraint to residents' properties, and on-dog and on-premises treatment with acaricides temporarily reduce prevalence but are often untenable economically. Contemporary Mexican RMSF is hyperendemic in small communities and cities, whereas epidemics occur in the western US primarily in small tribal communities. In in both locations, the epidemics are fueled by free-roaming dogs and massive brown dog tick populations. In the US, RMSF has a case fatality rate of 5% to 7%; among thousands of annual cases in Mexico, case fatality often exceeds 30%.1,2 Numerous case patients in US border states have recent travel histories to northern Mexico. Veterinarians and physicians should alert the public to RMSF risk, methods of prevention, and the importance of urgent treatment with doxycycline if symptomatic. One Health professionals contribute ideas to manage ticks and rickettsial disease and provide broad education for the public and medical professionals. Novel management approaches include vaccine development and deployment, acaricide resistance monitoring, and modeling to guide targeted dog population management and other interventions.

Global Sensitivity Analysis of A Rabies Epidemic Model involving Dog Vaccination and Dog Population Management

Rabies is a zoonotic disease which is spread by animals mostly carnivores. Rabies regards as tropic disease. In this article, we construct a mathematical model for rabies involving dog vaccination and dog population management. The model has two equilibrium points, namely rabies-free equilibrium point and endemic equilibrium point. We determine the effective reproduction ratio using next generation matrix. Our dynamical analysis shows that rabies-free equilibrium point is conditionally stable. A global sensitivity analysis is performed to investigate which intervention is the most crucial among the two interventions considered in the model. We use Latin hypercube sampling method to generate parameter space. To investigate the parameter sensitivity, we calculate the partial rank correlation coefficient. We provide numerical experimental results related to stability and global sensitivity analysis. Our results show that the effective reproduction ratio is more sensitive to dog population management than vaccination intervention. This suggests that dog population management intervention, such as sterilization and monitoring of dog movements significantly reduces the effective reproduction ratio compared to vaccination programs. In addition, the number of infectious dogs has a strong correlation with dog culling actions.

Application of Structural Equation Modeling (SEM) for Free-Roaming Dog Population Management

Application of Structural Equation Modeling (SEM) for Free-Roaming Dog Population Management

Review of stray dog management: dog days in the European countries

Western societies face a major challenge to control their stray dog population due to its uncontrolled propagation and abandonment. Despite the management programmes implemented in many European countries, the reduction of the stray dog population has not been achieved. This is not only related to dogs’ well-being, but also to their coexistence with humans, especially in urban areas. Problem-solving approaches vary in different countries, as there is no common legislation in the European Community dealing with stray dog control. To realise this research study, data from secondary sources, as well as data collected from thirteen European countries were analysed. A comparative overview of policies and measures was examined to show that stray dog population management depends on the policy implicated by each country. In contrast to countries of northern Europe, significant problems were faced mainly by the countries of southern Europe and the Balkans. The purpose of this paper was to present the legal framework of management for the stray dog population in accordance with what is implemented in different EU countries and to unveil the need for action for a common European Community Directive or Regulation dealing with stray dog control.

Navigating the streets


 The Indian government’s approach to dog population management for the last two decades – the animal birth control (ABC) program – has yielded poor results. Aside from its implementation failures, the ABC is scientifically unsuited to the scale and severity of the harms posed by free-ranging dogs. It is based on a deficient understanding of both animal behaviour and animal welfare. The Indian Supreme Court, which is hearing multiple petitions relating to the danger to human life and safety posed by India’s burgeoning population of free-ranging dogs, has issued interim orders that restrict alternative interventions such as long-term sheltering and euthanasia. While the legal dispute has meandered through the judicial system for more than a decade, the harms caused by free-ranging dogs continue unabated. Recent legislative changes, which encourage the maintenance of dogs on streets, have pushed government policy in a seemingly regressive pathway. This paper presents a critical discussion of the legal and policy position, and suggests integrated and contextual approaches for viable dog population management. 

Assessing multiple free-roaming dog control strategies in a flexible agent-based model

Management of free-roaming dog populations is required to mitigate the threat of pathogens like rabies, minimize conflict with people, wildlife, and livestock and improve dog welfare however there are multiple strategies currently employed including sterilization, vaccination, and lethal removal. This work describes an agent-based stochastic model, ‘StreetDogSim’ that can be used as a planning tool to investigate the predicted impact of different strategies with variable implementation approaches and adjustable parameters to match local conditions. Here, we explore the effects of different management strategies with additional variation in their duration, intensity, and vaccine quality on important population metrics such as overall size, demographics, vaccination coverage, time until effective population suppression, and duration of suppression. Under most model parameterizations, a strategy that targets females for sterilization with vaccination outperforms all other options with respect to population control and demographic changes.

Review of Dog Population Management Legislation in Sri Lanka: History, Circumstances, Role of Local Authorities and Present Scenario

Review of Dog Population Management Legislation in Sri Lanka: History, Circumstances, Role of Local Authorities and Present Scenario

Barriers and opportunities for improving dog bite prevention and dog management practices in northern Indigenous communities.

Globally, people living in northern Indigenous communities are at higher risk of dog bites than the rest of the population living in North America, with annual incidence ranging from 0.61 to 59.6/10,000 inhabitants. Considering that rabies is endemic in wild canid populations in certain regions of the Arctic, the prevention of dog bites and the management of dog populations are of crucial importance for public health in these contexts. Most northern communities lack access to veterinary services, mainly due to their remote geographical location and to limited financial resources. Currently, northern Indigenous communities are using different approaches and strategies to prevent dog bites and manage dog populations, but the effectiveness of these approaches sometimes lacks evidence, and their low acceptability may affect their implementation. This study aims to describe (1) the current access and uses of veterinary services, and (2) the perceived barriers and opportunities related to dog population management practices currently implemented, or that could be implemented, in a Naskapi community and an Innu community located in northern Quebec (Canada). Quantitative data were collected through a survey to inhabitants on veterinary services (n = 122). Qualitative data were collected using individual interviews to inhabitants and health professionals to describe how dog population management measures were perceived, and to identify barriers and opportunities related to their implementation (n = 37). Descriptive and inferential analysis (quantitative data) and thematic analysis (qualitative data) were performed. Results show that the two main measures implemented at the time of the study - dog culling and short-duration veterinary clinics - were not perceived as fully acceptable and sustainable. Reinforcing access to veterinary services and other dog-related services, such as shelters and training programs on dogs, was identified as a need to improve dog bites prevention and dog population management in remote Indigenous communities. The implementation of animal health measures should be decided by concerned Indigenous communities to follow decolonial practices. It includes ensuring informed consent of dog owners, improving communication before, during and after interventions, separating veterinary services from rehoming and, most importantly giving back to Indigenous communities the complete leadership over animal health in their communities.

The Rabies Free Burkina Faso initiative: an example of how one health-oriented civil society organizations can contribute towards the achievement of the rabies zero by 30 goal

While technologies, tools and expertise have proven that countries can be made safe from dog-mediated human rabies, the disease remains a major public health threat in Burkina Faso. The paper reports the experience and success stories of Rabies Free Burkina Faso, an initiative established in 2020 as an example of civil society organization that promotes One Health for integrated rabies control in Africa. As recommended in the Global strategic plan, rabies elimination requires a systematic One Health approach, enhancing pre-exposure and postexposure prophylaxis, dog population management, dog vaccination, awareness raising, diagnosis, surveillance, funding as well as policies and regulations. Rabies Free Burkina Faso was established on 28 September 2020 as not-for-profit organization and aims to strengthen the use of a One Health approach as a non-governmental, multidisciplinary initiative dedicated to promoting rabies elimination. Categories of interventions developed by Rabies Free Burkina Faso cover awareness raising, training and One Health capacity building, dog rabies vaccination, seeking vaccines and providing support, including financial resource to communities to ensure that bite victims are appropriately provided with post-exposure prophylaxis, research, community engagement and joint outbreak investigation in collaboration with competent authorities. Reported success stories confirm the relevance of roles that can be played by Rabies Free Burkina Faso supporting animal health and human health authorities in the fields of rabies control and One Health development in the country.

Assessing the effect of a canine surgical-neutering educational programme on the knowledge and confidence of Indian veterinary participants.

India has a large, free-roaming dog population, encompassing both owned and stray dogs. Canine surgical neutering is often a central component of dog population management and rabies control initiatives. The provision of practical, surgical training opportunities remains a major challenge for veterinary educational establishments worldwide to ensure competency in this routine procedure. A 12-day educational programme, focusing on surgical neutering skills, was developed to address this need. A questionnaire comprising 26 questions covering surgical and clinical topics, and a self-assessment of confidence in undertaking five common surgical procedures, was completed immediately before and after finishing the programme. A total of 296 participants attended, with 228 achieving the inclusion criteria for the study. Total knowledge scores increased significantly after the training programme (mean score pre-18.94, 95% CI 18.13-19.74; post-28.11, 95% CI 27.44-28.77, p < 0.05) with improvements seen in all categories (surgical principles, anaesthesia, antibiotic use and wound management). After accounting for other participants' characteristics, scores increased, on average, by 9 points after training. Being female was associated with significantly higher overall scores, while compared to younger and older age groups, those aged 25-34 were associated with lower overall scores. Amongst those with post-graduate qualifications, overall scores increased with age. Furthermore, there was an increase in self-rated confidence by participants in undertaking all five procedures. This study demonstrates that a targeted training programme can improve veterinary participants' knowledge and confidence in canine surgical neutering and may provide an effective way to develop surgical expertise amongst veterinarians engaged in dog population management initiatives.

Impact Assessment of Free-Roaming Dog Population Management by CNVR in Greater Bangkok.

A high-intensity catch, neuter, vaccinate and return (CNVR) intervention was used over 5 years to manage the free-roaming dog population of Greater Bangkok, using nearly 300,000 CNVR operations across six provinces. An evaluation was conducted using multiple methods to assess the impact of this intervention, including clinical data, an observational street survey, an online attitude survey and reported cases of dog rabies confirmed with laboratory testing. The evaluation found evidence of a reduction in free-roaming dog density over time (24.7% reduction over 5 years), a reduction in dog rabies cases (average reduction of 5.7% rabies cases per month) and an improvement in dog-human relationships (a 39% increase per year in free-roaming dogs with visible signs of ownership or care and a perception of less trouble with free-roaming dogs in districts benefiting from CNVR). The CNVR intervention appears to have been effective at reducing the current free-roaming dog population and minimizing one future source of free-roaming dogs by limiting breeding of dogs accessible on the streets. However, there is evidence that other sources of free-roaming dogs exist, presumed to be predominately abandoned or lost owned dogs that were previously inaccessible to the CNVR intervention because they were ordinarily confined or living outside the project area. Hence, fully effective dog population management will require further interventions targeting owned dogs in addition to this CNVR effort.

Laboratory-confirmed three rabid spotted deer in Colombo suburbs in Sri Lanka: does it alarm the disease transmission to humans?

Rabies is a zoonotic viral disease which is fatal if post-exposure prophylaxis is not administered immediately after an infected bite. In Sri Lanka, around 20-30 human rabies deaths are reported each year, nearly all of which occur from being bitten by rabid dogs, which could occur due to lack of dog vaccination coverage, dog population management and community awareness (1). Three laboratory-confirmed rabid spotted deer were found in August 2022 in Homagama and Athurugiriya areas in Sri Lanka. Prevention of deer-to-human and deer-to-dog transmission is strengthened by multi-stakeholder collaboration. Controlling and preventing of transmission of the disease among the herd of deer, locating them in the dry zone as well as controlling their breeding remain a challenge. The rabid positive cases indicated that more animals could be affected by the disease, thus, the risk to human health and economic losses remain unknown. Therefore, vigilant attention is needed.

Financial and Socio-Economic Effects of Investment in the Context of Dog Population Management.

The modern world faces serious challenges associated with the presence of stray dogs on the streets, especially in urban areas. Vardar Planning Region in North Macedonia, which consists of nine municipalities, experiences such challenges. According to current reports, the number of stray dogs on the streets of cities in this region has increased, which has resulted in an increase in the number of dog attacks on residents. As the existing capacities are small in the registered shelters, we considered the possibility of building a new shelter for stray dogs to meet the needs of this region. The goal of our paper is the evaluation of the financial and socio-economic justifications for the construction of a shelter for stray dogs in the Vardar Planning Region (VPR). The results of the financial justification analysis show that the project does not provide satisfactory financial results. Namely, the Financial Net Present Value (FNPV) is negative, with a value of EUR 75,291. The Financial Internal Rate of Return (FIRR) is 0.57%, lower than the discount rate, which is not acceptable for a private investor. The Financial Benefit-Cost Ratio (FB/CR) of this project is 0.925, suggesting that the total discounted costs are greater than the total discounted revenues. On the other hand, the expected socio-economic benefits from this project are multifaceted, including savings in stray dog bite costs, savings in the cost of traffic accidents caused by stray dogs, and savings in the treatment of diseases caused by stray dogs. The results of the economic analysis show that this investment has full socio-economic justification and that it should be implemented. The Economic Net Present Value (ENPV) is positive and amounts to EUR 789,916. The Economic Internal Rate of Return (EIRR) is 25.94% and the Economic Benefit-Cost Ratio (EB/CR) amounts to 1.90, i.e., greater than 1. The results of the sensitivity analysis also confirm the justification for the realization of this project.

Community dog program in five municipalities of Paraná, Brazil

It is necessary to advance the study of stray dog population management strategies because of the vulnerable situation in which stray dogs live which may pose risks to humans, animals, and the environment. The objective of this study was to describe the implementation of the Community Dog Program in 5 municipalities in the state of Paraná, listing its main characteristics and the most common challenges encountered. The study was carried out from July to November 2016 in the municipalities of Araucária, Lapa, Pinhais, Piraquara, and Ponta Grossa through their Municipal Health and Environment Secretariats. The Community Dog Program was implemented when the register included 20 dogs per municipality, and it was considered that the secretariats were able to continue the program autonomously. The methodology was based on the pioneer municipalities in the state, Araucária, and Campo Largo, regarding the registration of community dogs. The program was implemented in 5 phases: initial planning, screening of animals, registration of dogs and caretakers, veterinary procedures with animals included in the program, and a final meeting with all involved. The method initially proposed a review required by the field. For example, in the municipality of Piraquara, most dogs (75%, 15/20) did not have a fixed shelter, but met the other criteria. Inadequate handling by the caretakers regarding the supply of food and water to the dogs, the limited structure and human resources of the secretariats to carry out these actions, and the behavior of chasing the dogs were the main challenges of implantation. As for the chasing of moving objects by animals, there was a greater tendency for dogs to exhibit such behavior as adults, with time spent in the place of 1 to 5 years and in front of homes. The methodology used in the 5 municipalities proved to be applicable for the implementation of the Community Dog Program, as it allowed a list of relevant characteristics for population management and the most common challenges. The experience of implementing the program in 5 municipalities has the potential to support the construction of a guiding protocol to facilitate its implementation in other municipalities.

Population dynamics of free-roaming dogs in two European regions and implications for population control.

Changes in free-roaming dog population size are important indicators of the effectiveness of dog population management. Assessing the effectiveness of different management methods also requires estimating the processes that change population size, such as the rates of recruitment into and removal from a population. This is one of the first studies to quantify the size, rates of recruitment and removal, and health and welfare status of free-roaming dog populations in Europe. We determined the size, dynamics, and health status of free-roaming dog populations in Pescara, Italy, and Lviv, Ukraine, over a 15-month study period. Both study populations had ongoing dog population management through catch-neuter-release and sheltering programmes. Average monthly apparent survival probability was 0.93 (95% CI 0.81-1.00) in Pescara and 0.93 (95% CI 0.84-0.99) in Lviv. An average of 7 dogs km-2 were observed in Pescara and 40 dogs km-2 in Lviv. Per capita entry probabilities varied between 0.09 and 0.20 in Pescara, and 0.12 and 0.42 in Lviv. In Lviv, detection probability was lower on weekdays (odds ratio: 0.74, 95% CI 0.53-0.96) and higher on market days (odds ratio: 2.58, 95% CI 1.28-4.14), and apparent survival probability was lower in males (odds ratio: 0.25, 95% CI 0.03-0.59). Few juveniles were observed in the study populations, indicating that recruitment may be occurring by movement between dog subpopulations (e.g. from local owned or neighbouring free-roaming dog populations), with important consequences for population control. This study provides important data for planning effective dog population management and for informing population and infectious disease modelling.

The final stages of dog rabies elimination from Japan.

Rabies is a lethal zoonotic disease mainly transmitted to humans by dog bites. The purpose of this study was to assess the efficacy of rabies control policies in Japan, which resulted in the elimination of the disease from the country in 1957. Using historical records from the Kanto region (Chiba, Kanagawa, Saitama and Tokyo Prefectures) between 1947 and 1956 where the final canine cases were recorded, we undertook a descriptive epidemiological study, applying spatio-temporal scan statistics using SaTScan and estimating the effective reproduction number (Rt ) for the clusters and each prefecture using the growth rates. There were 1,567 dog rabies and 161 human rabies cases recorded during this period. Vaccination coverage in registered dogs was over 70% after 1951, with much lower coverage in free-roaming and unregistered dogs. Eight clusters of dog rabies cases were identified: the first appeared in 1947 in Tokyo and was linked to three further clusters in peripheral prefectures between 1947 and 1951. Three more clusters occurred in Tokyo again between 1952 and 1954, and the last cluster was in Tokyo and Kanagawa between 1955 and 1956. Rt in the first cluster was 1.68, and Rt values in the others ranged between 1.18 and 1.86, with an exception of 4.05 in the smallest cluster in Tokyo in 1952 (10 cases). The moving average of Rt coincided with the clusters. As dog vaccination and dog management progressed, and the number of dog rabies cases declined, the moving average of Rt declined to below 1. Delays in the implementation of dog management policies in Kanagawa may have prolonged this last outbreak. These results demonstrate the effectiveness of coordinated control policy involving dog vaccination and management of free-roaming dog populations for rabies elimination.

The identification of dwellings and site formation processes at archaeological settlements in the tropics: A micro-geoarchaeological case study from neolithic Loc Giang, southern Vietnam

Across the prehistoric period in Mainland Southeast Asia (MSEA), very few architectural remains and settlements have been identified and there is an absence of evidence for dwellings and domestic spaces. Loc Giang (3980–3270 cal BP) in Long An Province, southern Vietnam is one of the few prehistoric settlements excavated in the region, revealing compacted, laterally extensive layers hypothesised to be floors in association with several other occupation deposit types. Due to the complex occupation stratigraphy encountered in the field, as well as intensive post-depositional processes of tropical environments, a state-of-the-art micro-geoarchaeological approach was used to identify site formation processes. Here, we present a description and depositional history of eight major deposit types (microfacies); among these, we identify constructed lime mortar floors, pile dwellings, evidence for the systematic treatment of waste, and prepared organic deposits likely associated with the management of dog and pig populations. Through the study of site formation we reconstruct at high resolution the nature of dwellings and organisation of domestic spaces within one of the earliest neolithic and sedentary settlements in the region. We demonstrate that within destructive burial environments of the tropics, micro-geoarchaeology offers an effective scientific toolkit for detecting settlement features with low macro-archaeological visibility, thereby enabling us to reconstruct pile dwellings and associated lime floors that were poorly characterised previously in MSEA prehistory.