Abstract Background Animal assisted intervention (AAI) is a popular type of non-pharmacological psychosocial intervention, which has a potentially positive effect on physical, psychological, and social functioning for people with dementia. However, there is a lack of evidence regarding the experiences and factors of implementing AAI, and its impacts on people with dementia in different contexts. This review aims to synthesise key stakeholders’ experiences and perceptions of AAI for people with dementia in community settings. Methods We systematically searched Medline, CINAHL, Embase, Scopus, Web of Science, PsycINFO and AgeLine for potentially eligible studies. Thematic analysis was used to synthesise the data from included records. We assessed the methodological limitations using an adaptation of the Critical Appraisal Skills Programme (CASP) and used GRADE-CERQual (Confidence in the Evidence from Reviews of Qualitative research) to assess confidence in the review findings. Two Patient and Public Involvement (PPI) contributors were involved to enhance the quality and relevance of the research. Results We included 14 reports and developed three analytical themes, incorporating a gardening analogy: planting-connecting with animals, growing-engaging in AAI, and nurturing-making AAI work, with 15 key findings. Our review highlights that positive experiences, growing connections, and potential benefits were perceived within AAI. A multicomponent AAI can provide various sensory inputs, attributing to a rich experience. Flexible and individualised AAI tailoring to people’s needs and preferences is important. Additional training and education for staff are necessary to facilitate the intervention, reduce risks, and nurture connections. Conclusion This review describes people’s experiences and perceptions of AAI for people with dementia, and provides recommendations on development and implementation of AAI, with moderate to high confidence in its findings. It is important to consider the factors that influence the implementing AAI identified in this review, to facilitate engagement and long-term impacts in future interventions.