A factor analysis of fearfulness in potential guide dogs

The correlations between measurements of a variety of responses, including approach, avoidance, nature of contact with the stimulus, tail position and posture, to a large number of stimuli were analysed. In general, the measurements were correlated, indicating a general trait of fearfulness, but some of the correlations were very low. Factor analysis showed that measurements were more likely to be highly correlated if they were based on similar responses, or used similar stimuli, or were made close together in time. In most cases, it was avoidance responses which were most highly correlated with fearfulness as assessed by guide dog trainers. Adult fearfulness could be predicted to some degree from fearfulness at 3 months of age, but the accuracy of the prediction improved with age.     

Development of play behavior between potential guide dogs for the blind and human raisers

This study shows longitudinal development of human-dog interactions in a guide dog raising program. Social play interactions between potential guide dogs for the blind (puppies) and their adult female raisers (PWs) were videotaped at home during the period from two months to 11 or 12 months of the puppies' age. The puppies and PWs established close proximity relationships by two to three months of age. The older the puppies became, the shorter time the puppies and PWs spent in intensive fighting and chasing play. The older the puppies became, the longer the puppies and PWs spent in waiting, seeking and possessing together play which needed the puppies' self-control, concentration and ability to cooperate with the PWs. Whether or not these behavioral tendencies which the puppies showed were appropriate for guide dog candidates is also discussed.     

Inappropriate behavior of potential guide dogs for the blind and coping behavior of human raisers

Inappropriate behaviors of potential guide dogs (puppies) for the blind and coping behaviors of their adult female raisers (puppy walkers: PWs) were videotaped in their play situation at home from when the puppies were 2-11 or 12 months of age. The frequency of inappropriate behavior decreased with an increase in the puppies' age, suggesting that human-dog relationships became friendlier. The PWs tended to use moderate coping behaviors to stop the inappropriate behaviors of the puppies. Rejecting interaction with the puppies was effective for stopping the puppies from biting the PWs. Forcible stopping was effective for stopping the puppies from damaging objects. Not responding to the puppies was effective for stopping the puppies from biting the PWs, barking/growling and damaging objects.     

Early behaviour in fishes

Synopsis The ethological approach to the study of early life histories of fishes is illustrated by examples of behavioural ontogeny in cichlid and salmonid fishes. In both species recognition and social organization, early experience is of crucial importance.Paper presented in the symposium \lsEmbryonic and larval periods of fishes: present status and significance\rs, Canadian Conference for Fisheries Research (CCFFR), Fredericton, New Brunswick, January 1977     

User guide for the discovery of potential drugs via protein structure prediction and ligand docking simulation

Journal of Microbiology - Due to accumulating protein structure information and advances in computational methodologies, it has now become possible to predict protein-compound interactions. In...     

Dispersal behaviour of African wild dogs in Kenya

Dispersal behaviour plays a key role in social organisation, demography and population genetics. We describe dispersal behaviour in a population of African wild dogs (Lycaon pictus) in Kenya. Almost all individuals, of both sexes, left their natal packs, with 45 of 46 reproductively active “alpha” individuals acquiring their status through dispersal. Dispersal age, group size and distance did not differ between males and females. However, only females embarked on secondary dispersal, probably reflecting stronger reproductive competition among females than males. When dispersing, GPS-collared wild dogs travelled further than when resident, both in daylight and by night, following routes an order of magnitude longer than the straight-line distance covered. Dispersers experienced a daily mortality risk three times that experienced by adults in resident packs. The detailed movement data provided by GPS-collars helped to reconcile differences between dispersal patterns reported previously from other wild dog populations. However, the dispersal patterns observed at this and other sites contrast with those assumed in published demographic models for this endangered species. Given the central role of dispersal in demography, models of wild dog population dynamics need to be updated to account for improved understanding of dispersal processes.     

Activity patterns and behaviour of sled dogs

The general activity and specific behaviours of adult sled dogs were observed following the end of the race season. Although heightened levels of activity occurred around sunrise and sunset, the dogs spent the vast majority of the day and night in a recumbent posture doing little, if anything. This quiescence was independent of ambient temperature, and was virtually unchanged when additional data were collected 2 years after the initial observations. Much of the limited amount of movement which was observed appeared to be reactive rather than spontaneous.     

Eliminatory behaviour of domestic dogs in an urban environment

Although dogs are valuable, indeed essential, members of society, they sometimes cause problems of an aesthetic, environmental or public health nature arising from their eliminatory habits. To identify which kinds of dog are more likely to be responsible for these problems, defaecation and urination by domestic dogs under varying degrees of human control were studied in the field. Observations were made between February 1980 and November 1981 in 2 streets, 2 landscaped parks and 2 large rough grass areas. The dogs most likely to defaecate in these public places were those who were accompanied by their owner, but not restricted by being on a lead. There was also an inverse correlation between the number of visits made by dogs on a lead to, and faeces density in, the study sites. Generally, the dogs responsible for most urination were discovered to be those off rather than on a lead, males rather than females, and pedigree males rather than mongrel males. Explanations of these findings, and suggestions for minimising dog fouling of the environment, are offered.