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Vieira de Castro, A. C.

Publications and source records attributed to Vieira de Castro, A. C..

2 recordsLinked to original sources

What's in it for the dogs? Assessing the outcomes of a prison-based dog training program from an animal behavior and welfare perspective

Prison-Based Dog Training Programs (PBDTPs) are gaining popularity across the world for their benefits to inmates in terms of mental and emotional health, and reduced recidivism. However, research on the implications for the dogs is limited. The aim of the present study was to assess the outcomes of a PBDTP from an animal behavior and welfare perspective. Shelter dogs (N=42) were transported to and from the prisons twice a week where they received training from inmates for a total duration of 12 weeks. Dogs were tested for potential improvements in socialization and handling skills and basic training skills using standard tests (Temperament Test and Basic Education Test). Dog welfare was assessed using behavioral, physiological, and cognitive measures, namely stress-related behaviors and overall behavior states during training sessions, salivary cortisol levels, and cognitive bias tests. Results showed that participating in the PBDTP improved the dogs sociability towards humans and increased playful behavior, and improved basic training skills including not jumping on people, walking on a leash without pulling, responding to commands (sit, down, and staying in place) and staying calm when separated from the handler. Furthermore, behaviors indicative of stress were generally rare during training sessions and no impact of the PBDTP was found on the levels of salivary cortisol nor on the dogs affective states (as measured with cognitive bias tests). In conclusion, the present study suggests that PBDPTs are beneficial for dogs, with animals showing no indicators of compromised welfare while displaying improved behavior skills, which will likely facilitate their future rehoming.

animal behavior and cognition↗

Does training method matter?: Evidence for the negative impact of aversive-based methods on companion dog welfare

There is a growing number of dogs kept as companion animals, and the methods by which they are trained range broadly from those using mostly positive punishment and negative reinforcement (aversive-based methods) to those using primarily positive reinforcement (reward-based methods). Although the use of aversive-based methods has been strongly criticized for negatively affecting dog welfare, these claims do not find support in solid scientific evidence. Previous research on the subject lacks companion dog-focused research, investigation of the entire range of aversive-based techniques (beyond shock-collars), objective measures of welfare, and long-term welfare studies. The aim of the present study was to perform a comprehensive evaluation of the short- and long-term effects of aversive- and reward-based training methods on companion dog welfare. Ninety-two companion dogs were recruited from three reward-based (Group Reward, n=42) and four aversive-based (Group Aversive, n=50) dog training schools. For the short-term welfare assessment, dogs were video recorded for three training sessions and six saliva samples were collected, three at home (baseline levels) and three after the training sessions (post-training levels). Video recordings were then used to examine the frequency of stress-related behaviors (e.g., lip lick, yawn) and the overall behavioral state of the dog (e.g., tense, relaxed), and saliva samples were analyzed for cortisol concentration. For the long-term welfare assessment, dogs performed a cognitive bias task. Dogs from Group Aversive displayed more stress-related behaviors, spent more time in tense and low behavioral states and more time panting during the training sessions, showed higher elevations in cortisol levels after training and were more pessimistic in the cognitive bias task than dogs from Group Reward. These findings indicate that the use of aversive-based methods compromises the welfare of companion dogs in both the short- and the long-term.

animal behavior and cognition↗