Can Dogs' Origins and Interactions with Humans Affect Their Accomplishments? A Study on the Responses of Shelter and Companion Dogs during Vocal Cue Training.

Maria Luiza A Fonseca,Angélica S Vasconcellos

doi:10.3390/ani11051360

Maria Luiza A Fonseca, Angélica S Vasconcellos

Open Access

https://doi.org/10.3390/ani11051360

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Abstract

Simple SummaryThe life history of animals is an important aspect to be considered when behavior, welfare, or cognition is investigated. Here, we aimed to study the behavioral responses of dogs with different origins—shelter and companion dogs—when learning two basic vocal cues (“sit” and “paw”), as well as possible associations between dogs’ responses and the behaviors of the trainers. Shelter dogs responded to more cues per session, were faster in their responses, and needed fewer repetitions of cues to respond than companion dogs. Moreover, shelter dogs spent more time wagging their tails during the sessions. Some behaviors of the trainers were associated with dogs’ behaviors—the use of a reproachful tone of voice, although associated with dog performance, was also linked to the exhibition of behaviors indicative of discomfort on the part of dogs. On the other hand, the use of a neutral tone of voice and laughter, in addition to being connected to performance, was also associated with behaviors indicative of excitement. These results suggest that shelter dogs’ capacities for learning vocal cues are not affected by the shelter environment. Furthermore, shelter dogs showed greater interest in the sessions than companion dogs, possibly due to the social deprivation in their routine. Our outcomes also point to a connection between friendly interactions during training and the dogs’ performance, and possibly their emotional state. The quality of the interactions seems to affect dogs’ performance and welfare more strongly than their origins.The inclusion of life history as a possible influential factor is pivotal in studies on behavior, welfare, and cognition. Shelter dogs have usually experienced a life involving poor social interactions with humans. Thus, we aimed to investigate the behavioral responses of shelter dogs (SDs) and companion dogs (CDs) during the training of two vocal cues (“sit”, “paw”), as well as the possible associations between their responses and the behaviors of trainers. We studied 15 SDs and 15 CDs in up to eight five-minute training sessions. Dogs’ and trainers’ behaviors were recorded and analyzed (through GLM, GLMM, correlation and Mann–Whitney tests). Shelter dogs responded to more cues per session, with shorter latencies and fewer repetitions of cues. Moreover, SDs spent more time wagging their tails. Dogs’ sex and trainers’ behaviors were also associated with differences in dogs’ responses. The use of a reproachful tone of voice was associated with a greater number of cues responded to, shorter latencies, and fewer repetitions of cues. However, this type voice/discourse was also linked to a greater exhibition of non-training behaviors (e.g., exploring the room or jumping on the trainer), and to dogs spending less time next to the trainer and wagging their tails. On the other hand, the use of a neutral tone of voice and laughter, besides being linked to performance, was also associated with longer durations of tail wagging. Furthermore, the duration of the trainers’ orientation to dogs was correlated with the orientation of the dogs to the trainers. Our data suggest that, even when having experienced social deprivation from humans, SDs’ capacities to learn vocal cues were preserved, possibly due to ontogenic homeostasis processes. Shelter dogs’ greater interest in the sessions may be also credited to their socially-deprived routine. Our outcomes also point to an association between friendly interactions during training and dog performance and excitement, which suggests that such interactions may have the potential to improve SD welfare.

Highlights

Cognition is a system involved in knowledge acquisition, and people who own dogs tend to claim that these animals have great cognitive skills [1]
Shelter dogs responded to more cues per session, with shorter latencies and fewer cue repetitions
The training sessions of one shelter dogs (SDs) were considered non-standard, since cues were asked at intervals shorter than five seconds; this dog was excluded from the analyses

Summary

Introduction

Cognition is a system involved in knowledge acquisition, and people who own dogs tend to claim that these animals have great cognitive skills [1]. The selection for canine characteristics to facilitate the interactions of these animals with humans, as well as the intense coexistence between the two species may have been responsible for stimulating the development of attachment bonds in dogs. Dogs tend to play and explore an unfamiliar environment more when their owners are present [12]; when dogs feel threatened by a stranger, both their heart rate and its variation increase if the owner is not present, whereas his/her presence reduces these increases [13] Taking effects like these into consideration, researchers state that attachment bonds between dogs and humans are similar to those developed between human babies and their mothers [14]. The separation of dogs from their attachment figures—their owners—may favor the development of separation-related problems, which in turn, increases the chance of developing a pessimistic cognitive bias, an effect common in pet dogs, and reported in dogs from reallocation centers [15]

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