Aggressive behavior of dogs kept as companion animals: classification and influence of sex, reproductive status and breed
Contributor(s):: Peter L. Borchelt
Data were obtained from a total of 245 cases of aggressive-behavior problems in dogs kept as companion animals. Aggression involved barking, growling and biting behavior. For each case, a home visit of one to several hours yielded a description of the sequences of aggressive behavior and the...
Owner-companion dog interactions: relationships between demographic variables, potentially problematic behaviours, training engagement and shared activities
| Contributor(s):: Pauleen Charmayne Bennett, Vanessa Ilse Rohlf
Many companion dogs occupy a privileged position in our society, living closely with human caretakers who go to great lengths to provide for their needs and desires. Others fare less well, being abandoned or killed, many because they are believed to exhibit behaviour problems. The aim in this...
"Bark parks" - a study on interdog aggression in a limited-control environment
| Contributor(s):: Shyan, M. R., Fortune, K. A., King, C.
As limited-control dog parks become more popular, concerns arise about whether these parks encourage interdog aggression. Systematic observations made at 1 park in Indianapolis, USA over 72 h (between 1600 and 1830 h, 3-5 times a week) across 8 months (between March and November 2001) found that...
"Who's been a good dog?" - Owner perceptions and motivations for treat giving
| Contributor(s):: White, G. A., Ward, L., Pink, C., Craigon, J., Millar, K. M.
Complex relationships commonly exist between owners and their companion animals, particularly around feeding behaviour with an owner's affection or love for their animal most pronounced through the provision of food. It is notable that the pet food market is experiencing strong year-on-year...
'Canis empathicus'? A proposal on dogs' capacity to empathize with humans
| Contributor(s):: Karine Silva, Liliana de Sousa
Empathy has long attracted the attention of philosophers and psychologists, and more recently, of evolutionary biologists. Interestingly, studies suggest that empathy is a phylogenetically continuous phenomenon, ranging across animals from automatic emotional activation in response to the...
'subordination style' in pigs? The response of pregnant sows to mixing stress affects their offspring's behaviour and stress reactivity
| Contributor(s):: Ison, S. H., D'Eath, R. B., Robson, S. K., Baxter, E. M., Ormandy, E., Douglas, A. J., Russell, J. A., Lawrence, A. B., Jarvis, S.
In various mammals stress during gestation can result in long term effects on the behaviour and physiology of the offspring. The aims of this study were (i) to characterise individual variation among primiparous sows (gilts) in their behavioural and physiological response to a commercially...
A behaviour test on German Shepherd dogs: heritability of seven different traits
| Contributor(s):: Ruefenacht, S., Gebhardt-Henrich, S., Miyake, T., Gaillard, C.
In this study, genetic and non-genetic effects on behavioural traits were estimated, based on records of the field behaviour test of the Swiss German Shepherd Dog breeding club. This standardized test has been applied since 1949 and comprised the following seven traits: self-confidence, nerve...
A behavioural comparison of New Zealand White rabbits ( Oryctolagus cuniculus ) housed individually or in pairs in conventional laboratory cages
| Contributor(s):: Chu, L. R., Garner, J. P., Mench, J. A.
Despite their gregarious nature, rabbits used for research are often housed individually due to concerns about aggression and disease transmission. However, conventional laboratory cages restrict movement, and rabbits housed singly in these cages often perform abnormal behaviours, an indication...
A behavioural study of scrapie-affected sheep
| Contributor(s):: Healy, A. M., Hanlon, A. J., Weavers, E., Collins, J. D., Doherty, M. L.
The behaviour of 12 sheep, suspected of having scrapie, and 12 clinically normal animals from the Irish Republic was observed over a 6-day period [date not given]. Confirmation of the true disease status of the animals was made at postmortem using both histopathological and immunocytochemical...
A bio-behavioral study of chronic idiopathic colitis in the rhesus macaque (Macaca mulatta). (Special Issue: The welfare of laboratory primates.)
| Contributor(s):: Howell, S., White, D., Ingram, S., Jackson, R., Larin, J., Morales, P., Garcia, A. P., Hicks, C., Hopper, K., Wagner, J.
A brief note on some possible factors involved in the reactions of horses to humans
| Contributor(s):: Hausberger, M., Muller, C.
In order to investigate relationships of adult horses to humans, we developed a simple evaluation test and scores based on observations. The first reactions of 224 adult horses to the presence of an experimenter were observed and scored. All these horses belonged to the same riding school, had...
A case control study of on-farm risk factors for tail biting in pigs
| Contributor(s):: Moinard, C., Mendl, M., Nicol, C. J., Green, L. E.
A case for companion animal behavior
| Contributor(s):: Donal McKeown, Andreas Luescher
Applied animal behavior is a rapidly growing discipline in the field of clinical veterinary medicine. It is critical that practising veterinarians have a working knowledge of companion animal behavior.
A case series of biting dogs: characteristics of the dogs, their behaviour, and their victims
| Contributor(s):: Guy, N. C., Luescher, U. A., Dohoo, S. E., Spangler, E., Miller, J. B., Dohoo, I. R., Bate, L. A.
The characteristics of 227 biting dogs, their homes, and their victims were gathered in a detailed telephone survey of general veterinary clientele in the Canadian provinces of New Brunswick, Nova Scotia, and Prince Edward Island in 1996. All of the dogs had bitten either someone living in the...
A case study of primiparous maternal and infant gorilla ( Gorilla gorilla gorilla ) behavior
| Contributor(s):: Crosby, J. Y., Lukas, K. E.
A primiparous mother and her infant were subjects of a longitudinal behavioral study at Lincoln Park Zoo in Chicago, Illinois. From November 1998 to November 1999, we collected a total of 100 hr of focal nonhuman animal instantaneous point sampling and all occurrence data on the mother and her...
A case study: fecal corticosteroid and behavior as indicators of welfare during relocation of an Asian elephant
| Contributor(s):: Laws, N., Ganswindt, A., Heistermann, M., Harris, M., Harris, S., Sherwin, C.
This study was a preliminary investigation of an enzyme immunoassay for measuring fecal glucocorticoid metabolites in a male Asian elephant (Elephas maximus) by investigating changes in behavior and cortisol metabolite excretion associated with a putative stressful event. The study collected...
A case study: the effect of visitors on two captive pumas with respect to the time of the day
| Contributor(s):: Maia, C. M., Volpato, G. L., Santos, E. F.
This study analyzed the effects of noise levels and number of visitors on the behaviors of a mother puma and her daughter in a zoo environment with respect to the time of day. The study monitored visitation (noise and number) over two 1-week periods (4 weeks between periods) and frequency of...
A cautionary note regarding the use of nutritional L-tryptophan to alter aversion-related behaviour in mice
| Contributor(s):: Janczak, A. M., Bakken, M., Braastad, B. O.
Nutritional L-tryptophan is reported to have positive effects on the behaviour of several farm animals. The present experiment describes some effects of nutritional L-tryptophan on the aversion-related behaviour of male mice selected for high litter size. The behavioural effects of L-tryptophan...
A close keeper-nonhuman animal distance does not reduce undesirable behavior in contact yard goats and sheep
| Contributor(s):: Anderson, U. S., Maple, T. L., Bloomsmith, M. A.
This study investigated the relation between zookeeper-nonhuman animal distance and the undesirable behaviour that goats and sheep exhibited toward visitors of Zoo Atlanta's (Georgia, USA) contact yard. It hypothesized that a close distance between keeper and animal would be associated with a...
A combination of behavioral and physiological indicators for assessing pig welfare on the farm
| Contributor(s):: Candiani, D., Salamano, G., Mellia, E., Doglione, L., Bruno, R., Toussaint, M., Gruys, E.
The purpose of this research was to identify pig welfare indicators that could help in recognizing stressful practices on farm. The study evaluated behavioral and physiological indicators (cortisol and negative acute phase proteins) in 2 groups of 20 female pigs 4 months old after a 48-hr...