Separation-related behaviours (SRBs), including but not limited to vocalisation, pacing, destruction and toileting, occur in the absence of human company. As well as being problematic for the dogs’ owners, such behaviours indicate that the dogs’ emotional state is compromised. As part of the COVID-19 pandemic, time spent alone decreased considerably for many pet dogs, leading to concerns about the development of SRBs when dogs are left alone more again. The main aim of this study was to test the hypothesis that dogs whose time left alone decreased most (compared to a February 2020 pre-COVID baseline) would be at greatest risk of developing new signs of SRB when time left alone increased again. To achieve this aim, we utilised survey data gathered from dog owners between 4th May and 3rd July 2020, during the first COVID-19 ‘lockdown’ period in the United Kingdom (UK), and a follow-up survey of the same dog-owner cohort, completed when restrictions had eased between 10th October and 2nd November 2020. Individual dogs fluctuated considerably in whether they showed signs of SRB or not across the study period (n = 1807). Overall, the prevalence of SRB in the population decreased from 22.1% to 17.2%, as did the time dogs were left alone for between February and October 2020. However, 9.9% of dogs had developed new signs of SRB by the follow-up survey in October 2020, with dogs whose leaving hours decreased most during lockdown restrictions being at increased risk of developing SRBs. These findings have implications for our understanding of the etiology of SRB, by showing a link between changes in owner routine and SRB risk.

Owners’ understanding of dog behaviour influences dog welfare. This study aimed to investigate owners’ experiences of living with dogs and perceptions of dog behaviour/behaviour change. Data from an ongoing UK/ROI longitudinal study of dogs were used. Open-ended survey data (n = 3577 comments, n = 1808 dogs) when dogs were 12/16 weeks (data combined), 6, 12, 18 and 24 months were analysed to cover the dog’s puppyhood/adolescence. To evaluate the usefulness of open-ended survey questions, both quantitative textual and qualitative thematic analyses were employed. Textual analysis identified an overall positive sentiment at all timepoints; the proportion of positive: negative sentiments increased with the dog’s age. Words related to ‘love’ were the most frequent descriptors at all but the first timepoint, when ‘bite’ was the most frequent descriptor. Qualitative analysis helped to identify that owners attribute dog behaviour to ‘Dog’s biology’, ‘Personality/deliberate action’ and ‘External influences’. Analysis of open-ended survey responses helped to identify changes in perception over time. When dogs were young, owners described problematic behaviours as ‘mischievous’, unintentional and context-specific. Similar behaviours shown by older dogs were seen as ‘deliberate’. Both positive and negative experiences of dog ownership were identified. However, as not all respondents answered open-ended questions, the generalisability of our findings is limited.

In 2018, Dogs Trust (UK) launched the Post Adoption Support project, the largest known prospective cohort study investigating behavioural and health problems post-rehoming of dogs. Individuals adopting a dog from any UK Dogs Trust Rehoming Centre are eligible to receive phone calls regarding their dog’s health and behaviour at specific timepoints after adoption (2 days, 2 weeks, 4 months). Alongside providing an early and proactive framework to support the wellbeing of the adopter and dog, the project collects rich longitudinal data on dog health and behaviour following adoption to assess the development of issues, the impact of support given, and re-relinquishment risk. This paper details the methodology and study design of the Post Adoption Support project and describes a cohort profile of adoptions over an initial 6-month period. In the cohort, behaviour and health data were collected from 5498 adopters, with call success for those eligible ranging from 72% (4 months) to 89% (2 days). Data from these calls will provide significant insights into canine welfare during the first 4 months post-adoption, which can be used to inform strategies for effective and impactful rehoming and post-adoption support.

This mixed-methods study investigated themes and factors associated with recent dog adopters declining free over-the-phone support for dog behaviors of concern. At least one behavior of concern (potentially aggressive behavior [PAB], separation-related behavior [SRB], or other behavior of concern [OB]) was reported across 6,317 post-adoption support (PAS) calls made to 3,782 adopters at 2-days, 2-weeks, and 4-months post-adoption. However, for 68.8% of calls, the behavior support offered was declined. Generalized linear mixed-effects modeling and Tukey post-hoc testing showed declining support was significantly more likely at 2-weeks post-adoption compared to 2-days and when reporting behaviors of concern in the following combinations: PAB or SRB individually > PAB and SRB simultaneously > only OB > OB with PAB +/SRB. Inductive thematic analysis produced four themes from adopters' responses around declining help: "Awareness but no action yet", "managing behaviour", "feels support not needed", and "belief of cause". Findings offer insights into adopter attitudes around dog behavior, support needs, and behavioral management. Future research should explore whether declining this support is associated with using other support types and whether uptake impacts overall adoption.

Dog behaviour that owners perceive as undesirable can compromise dog welfare, impact the owner and human–animal bond, and may result in relinquishment or euthanasia. This longitudinal study explored the type and percentage of owner-perceived undesirable behaviours in 6, 9, 12, 15 and 18-month-old dogs, and examined differences in the prevalence of four commonly reported behaviours across these timepoints. Owners reported their dog’s undesirable behaviours via free-text answers in self-administered surveys. Of the five timepoints studied, the highest percentage of dogs reported by their owners to display one or more undesirable behaviours was in the 12-month survey (42.1%, 513/1219). Barking, jumping up, pulling on the lead and recall issues were the most commonly reported behaviours across all timepoints. Binomial mixed-effects models revealed a significant difference in prevalence of barking, pulling on the lead and recall issues between the timepoints, but no significant difference in the occurrence of jumping up at people. With many dogs in this study being reported to display undesirable behaviour, it is crucial that stakeholders inform dog owners, especially first-time owners, about the behaviours they may experience from young dogs and where to seek appropriate training/behaviour advice to potentially reduce the risk of relinquishment related to behaviour.

Dialects are a vocal signature of population membership. Early in human ontogeny, vocal behaviour is relatively similar across populations from an acoustic perspective. As ontogeny progresses, the difference between populations becomes larger. While research in recent decades has shown chimpanzees show population-specific vocal signatures, debates regarding the sources of this variation, namely whether it results from social, genetic, or ecological factors, continue. By studying the ontogeny of vocal dialects, we can gain new insights into the processes generating cross-population variation in vocal acoustics. In this study, we measured the acoustic characteristics of infant (N = 21) and juvenile (N = 10) chimpanzee (Pan troglodytes schweinfurthii) laughs (N = 4733), grunts (N = 3694), and whimpers (N = 2798) at Chimfunshi Wildlife Orphanage and Gombe National Park. Using permuted discriminant function analysis, we found that we could discriminate between sites for all call types, indicating the presence of dialects across the chimpanzee vocal repertoire. This pattern held for juveniles, but infant whimpers did not show site-specific vocal signatures. Furthermore, we could discriminate between sites significantly better for juveniles compared to infants. We discuss the different processes through which the presence of population-specific vocal signatures across the vocal repertoire from infancy may emerge and argue that the development of increasingly recognisable vocal dialects in ontogeny suggests a role for social and ecological factors in shaping chimpanzee vocal acoustics.