Identification of dysfunctional human-dog dyads through dog ownership histories.

The human-dog relationship is at least 16,000-years old and is mutually beneficial to both dyadic members. When the human-dog relationship becomes dysfunctional, however, there can be serious consequences for both parties and for society. Unfortunately, dysfunctional dyads are normally only identified after consequences have been felt (e.g., dog-human aggression) limiting the action that can be taken to prevent such occurrences. To evaluate whether these dysfunctional dyads can be preemptively identified, a questionnaire analyzing the owners' dog health care histories was administered to an urban dog owning population. Multiple correspondence analysis (n = 1,385) was conducted and identified three clusters accounting for 37.1% of the total variance, while four moderate positive correlations were found: "unspecified trauma" with "vehicular trauma" (r = 0.303, p < 0.001), "bitten" with "bit other animal" (r = 0.345, p < 0.001), "bit a person" with "bit other animal" (r = 0.369, p < 0.001), and "chronic illness" with "hospitalized" (r = 0.297, p < 0.001). These results suggest that a simple questionnaire can identify potential characteristics of functional and dysfunctional dyads. In functional dyads, humans tend to be responsible for their dogs' well-being, while dysfunctional dyads show the opposite characteristics, reporting experience with trauma and dog aggression.

Evaluation of the factor structure of the Canine Behavioural Assessment and Research Questionnaire (C-BARQ) in European Portuguese.

The human-dog relationship is thought to be the oldest domestic animal partnership. These relationships are complex and can become problematic when they become dysfunctional. The most common signs of dysfunctional human-dog partnerships are behaviour problems that, when unidentified and uncorrected, can be a clear danger to both species and the public. The Canine Behavioural Assessment and Research Questionnaire (C-BARQ) is a widely implemented instrument to evaluate dog behaviour proven to be useful across various cultures. A European Portuguese 78-item version based on the 100-item C-BARQ was developed and its psychometric properties evaluated. The resulting questionnaire has a 13-factor structure accounting for 58.42% of the total variance with Cronbach's alpha values ranging from 0.902 and 0.721, showing excellent to respectable consistency. The original factors, Dog-Directed Aggression and Dog-Directed Fear, both loaded strongly onto a joint factor renamed Dog Associated Fear/Aggression, explaining the 13-factor structure compared to the previously found 14-factor structure. In the European Portuguese C-BARQ only two items did not load onto their expected factor. Results show that the questionnaire measures universal dog behaviours that are evident to most owners. Our results suggest that the European Portuguese version of the C-BARQ can be used to characterize the behaviour of dog populations and is adequate for use in animal shelters to help match dogs with new owners and in clinical settings to identify behaviour problems in veterinary patients before they become unmanageable. The European Portuguese C-BARQ could be of vital importance in helping to resolve behavioural problems in owned dogs before they become so serious as to lead to abandonment or euthanasia, diminishing the pressure on municipal kennels and greatly improving canine welfare.