courtship and mating
31Diamondback terrapin — hand colored lithograph from Holbrook s North American Herpetology (1842) Conservation status …
32Eunectes murinus — Green Anaconda Scientific classification Kingdom: Animalia Phylum …
33Great raft spider — An adult female great raft spider on the surface of a water pool Conservation status …
34Tinbergen, Nikolaas — born April 15, 1907, The Hague, Neth. died Dec. 21, 1988, Oxford, Eng. Dutch born British zoologist, a founder (with Konrad Lorenz) of the science of ethology. Brother of Jan Tinbergen, he received his Ph.D. from the University of Leiden and… …
35Prawn — For other uses, see Prawn (disambiguation). Dendrobranchiata Temporal range: Famennian–Recent …
36Short-tail stingray — Conservation status …
37animal learning — ▪ zoology Introduction the alternation of behaviour as a result of individual experience. When an organism can perceive and change its behaviour, it is said to learn. That animals can learn seems to go without saying. The cat that… …
38bird — birdless, adj. /berrd/, n. 1. any warm blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard shelled egg. 2. a fowl or game bird. 3 …
39Bird — /berrd/, n. Larry, born 1956, U.S. basketball player. * * * I Any of the warm blooded, beaked vertebrates of the class Aves, including more than 9,600 living species. A covering of feathers distinguishes birds from all other animals. Birds have a …
40platypus — /plat i peuhs, poos /, n., pl. platypuses, platypi / puy /. a small, aquatic, egg laying monotreme, Ornithorhynchus anatinus, of Australia and Tasmania, having webbed feet, a tail like that of a beaver, a sensitive bill resembling that of a duck …
