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  Author Title Year Publication Serial Volume Pages Links
Virga, V.; Houpt, K.A. Prevalence of placentophagia in horses 2001 Equine veterinary journal 31 33 208-210 details   openurl
Nicol, C.J.; Brown, S.N.; Glen, E.; Pope, S.J.; Short, F.J.; Warriss, P.D.; Zimmerman, P.H.; Wilkins, L.J. Effects of stocking density, flock size and management on the welfare of laying hens in single-tier aviaries 2006 British poultry science 65 47 135-146 details   doi
McGreevy, P.D.; Richardson, J.D.; Nicol, C.J.; Lane, J.G. Radiographic and endoscopic study of horses performing an oral based stereotypy 1995 Equine veterinary journal 90 27 92-95 details   openurl
Alexander, F.; Nicholson, J.D. The blood and saliva clearances of phenobarbitone and pentobarbitone in the horse 1968 Biochemical pharmacology 117 17 203-210 details   openurl
Kirkpatrick, J.F.; Liu, I.M.; Turner, J.W.J.; Naugle, R.; Keiper, R. Long-term effects of porcine zonae pellucidae immunocontraception on ovarian function in feral horses (Equus caballus) 1992 Journal of reproduction and fertility 145 94 437-444 details   openurl
Kirkpatrick, J.F.; Wiesner, L.; Kenney, R.M.; Ganjam, V.K.; Turner, J.W. Seasonal variation in plasma androgens and testosterone in the North American wild horse 1977 The Journal of endocrinology 148 72 237-238 details   openurl
Vokey, J.R.; Rendall, D.; Tangen, J.M.; Parr, L.A.; de Waal, F.B.M. Visual kin recognition and family resemblance in chimpanzees (Pan troglodytes) 2004 Journal of comparative psychology (Washington, D.C. : 1983) 171 118 194-199 details   doi
Flack, J.C.; Jeannotte, L.A.; de Waal, F.B.M. Play signaling and the perception of social rules by juvenile chimpanzees (Pan troglodytes) 2004 Journal of comparative psychology (Washington, D.C. : 1983) 172 118 149-159 details   doi
Brosnan, S.F.; de Waal, F.B.M. Socially learned preferences for differentially rewarded tokens in the brown capuchin monkey (Cebus apella) 2004 Journal of comparative psychology (Washington, D.C. : 1983) 173 118 133-139 details   doi
de Waal, F.B.M.; Davis, J.M. Capuchin cognitive ecology: cooperation based on projected returns 2003 Neuropsychologia 182 41 221-228 details   openurl
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