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  1. The Role of Hybridization and the United States Fish and Wildlife Service Biologists' Discretion in the Implementation of the Endangered Species Act

    Contributor(s):: Jennifer F. Lind-riehl

    The Endangered Species Act (ESA) requires that the “best available scientific and commercial data” be used to enable the protection of critically imperiled species from extinction and preserve biodiversity. However, the ESA does not provide specific guidance on how to apply this...

  2. Abnormal behavior in caged birds kept as pets

    Contributor(s):: Hoek, C. S. van, Cate, C. ten

    There are a limited number of studies dealing with abnormal behavior in caged birds kept as pets. However, these studies demonstrate the presence of abnormal behavior in both songbirds and parrots. Ethological studies on these birds, as well as studies on domestic and zoo birds, indicate that...

  3. Animals in war, animals on war: new perspectives from a theater of species

    Contributor(s):: Chaudhuri, U.

  4. A framework for assessing the suitability of different species as companion animals

    Contributor(s):: Schuppli, C. A., Fraser, D.

  5. Effects of mixed-species stocking and space allowance on the behaviour and growth of red deer hinds and ewes at pasture

    Contributor(s):: Blanc, F., Theriez, M., Brelurut, A.

    A study was conducted to test whether the effects of space allowance on social interactions, activity patterns and growth rates of hinds reared at pasture in single-species groups, were modified by mixing them with ewes. 30 red deer hinds (10 months old) from the same breeding group and 30 ewes...

  6. Against Zoos

    Contributor(s):: Jamieson, Dale

  7. A comparative approach to the study of Keeper-Animal Relationships in the zoo. (Special Issue: Zoo animal welfare.)

    Contributor(s):: Carlstead, K.

    Research on intensively farmed animals over the past 25 years has shown that human-animal interactions, by affecting the animal's fear of humans, can markedly limit the productivity and welfare of farm animals. This article begins to explore some of the factors that need to be considered to...

  8. Assessment of the welfare of working horses, mules and donkeys, using health and behaviour parameters

    Contributor(s):: Pritchard, J. C., Lindberg, A. C., Main, D. C. J., Whay, H. R.

    Working animals provide an essential transport resource in developing countries worldwide. Many of these animals are owned by poor people and work in harsh environments, so their welfare is a cause for concern. A protocol was developed to assess the welfare of working horses, mules and donkeys in...

  9. Prototypes connect human diabetes with feline and canine diabetes in the context of animal-human bonds: an anthropological analysis

    Contributor(s):: Rock, M., Babinec, P.

    This study explored whether previous experiences with human diabetes influenced how people perceived and responded to the onset of diabetes in a companion animal, and if the experience of diabetic pet care might influence people's thinking and actions in relation to human health. We conducted a...

  10. Feeding gum arabic to New World monkeys: species differences and palatability

    Contributor(s):: Herron, S., Price, E., Wormell, D.

    Members of the New World primate genera Callithrix and Cebuella have specializations for eating plant exudates. Exudates are also an important component of the diets of many other callitrichid species in the wild, especially at times of nutritional stress. Gum arabic is fed daily to all marmosets...

  11. Pacing polar bears and stoical sheep: testing ecological and evolutionary hypotheses about animal welfare

    Contributor(s):: Clubb, R., Mason, G.

    Responses to potential threats to welfare vary greatly between species. Even closely related animals often differ in their fear of humans and/or novelty; their behavioural responses to pain; and when captive, their overall welfare and the form and frequency of their stereotypies. Such species...

  12. Quality of life and the evolution of the brain

    Contributor(s):: Kendrick, K. M.

    The dual problem of explaining brain evolution and the way in which it has led to wide species differences in behaviour and physiology has often appeared intractable to scientists. The main limiting factor is that we do not understand enough about how brains work to appreciate why gross or fine...

  13. Re-assessing the reversibility of melengestrol acetate (MGA) implants in golden-headed lion tamarins ( Leontopithecus chrysomelas ): a comparison with golden lion tamarins ( L. rosalia )

    Contributor(s):: Vleeschouwer, K. de, Leus, K., Elsacker, L. van

    The reversibility and flexibility of contraceptive methods generally allow for improved genetic and demographic management of captive populations. Earlier studies have produced conflicting results regarding the restoration of reproduction after using melengestrol acetate (MGA) implants in...