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Article
Service dog selection tests: Effectiveness for dogs from animal shelters.
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Year: 1997

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Abstract

Assistance dogs are trained to help people with various physical and mental handicaps. These dogs are selected using a test comprising several behavioral components. Anecdotal reports have shown that only about 50% of the dogs so selected successfully complete training and become assistance dogs. Traditionally training centers had used puppies, but recently some trainers have begun to use dogs from animal shelters and pounds. This study randomly chose six males and three female adult dogs of appropriate breed types, from a shelter environment and conducted an 11-item selection test on each. The dogs were then trained in both basic obedience and a retrieval task. We found no correlation between an animals' overall performance on the selection test and its ability to complete the retrieval task. One behavior trait, fear/submission, however, was predictable from the selection phase.


Article
The use of a behaviour test for selection of dogs for service and breeding. II. Heritability for tested parameters and effect of selection based on service dog characteristics.
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Year: 1997

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Heritability calculated for characteristics evaluated in behavioural tests can be used as a tool to select different kinds of service dogs. The evaluation was based on the test results of 1310 German shepherds and 797 Labrador retrievers. The heritability for all evaluated characteristics of the two breeds was significantly different from zero with the exception of the characteristic prey drive in Labrador retrievers. The test results for each characteristic were summarised to form an index value which simplified the interpretation of the test results. The heritability for this index value was 0.24 for both German shepherds and Labrador retrievers, a value that must be considered high as it included all tested parameters. The heritability was also calculated for the four factors derived from a factor analysis of the test results. Heritability estimates for these four factors were 0.15 to 0.32. The results show that complex behavioural patterns in dogs can be subjectively evaluated by an experienced person and that no more than a few characteristics are needed in order to describe the differences between dogs. Breeding results in a German shepherd population at the Swedish Dog Training Centre (SDTC) improved a relatively short time after the initiation of basing the selection of breeding animals on the index value of each individual animal. German shepherds bred by the SDTC also had higher index values than privately bred dogs which shows the importance of a goal-oriented breeding programme with emphasis on service dog characteristics. Finally different ways in which to collect information about dog behaviour are discussed. It is suggested that a subjective evaluation of certain behaviour characteristics is preferred to a factual description of reactions.


Article
Behavior and cortisol levels of dogs in a public animal shelter, and an exploration of the ability of these measures to predict problem behavior after adoption.

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Behavior and plasma cortisol levels were examined in puppies and juvenile/adult dogs admitted to a public animal shelter. A behavioral test was developed to assess the responses of the dogs to novel or threatening conditions. Factor analysis of the behavioral responses of 166 dogs on day 3 in the shelter yielded six factors (locomotor activity, flight, sociability, timidity, solicitation, and wariness) that accounted for 68% of the total variance. Among those dogs remaining in the shelter for 9 days, plasma cortisol levels declined from day 2 to 9. Cortisol levels were weakly related to factor scores. In order to explore the relation of measures in the shelter to later behavior, questionnaires assessing problem behaviors were mailed to new owners of dogs 2 weeks and 6 months following adoption. Among puppies, wariness scores were negatively correlated with behavior problems at 2 weeks and cortisol levels were negatively correlated with behavior problems at 6 months. These results suggest how measures of behavior and endocrine activity obtained in shelters might prove useful for screening dogs for adoption or targeting dogs for behavioral intervention.

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