1. Naloxone and play fighting in juvenile rats;Beatty;Pharmacol. Biochem. Behav.,1982
2. Physiological aspects of sucking and weaning which may affect behavioural and pathological processes;Bell,1982
3. Stereotypies as animal welfare indicators;Broom,1983
4. Studies on the behaviour of domestic cattle. (1) Skin hygiene, (2) curiosity, (3) play;Brownlee;Vet. Rec.,1950