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Animal behaviour (ethology) includes any activity of an intact organism. A living
animal behaves constantly in order to survive, and all animals must solve the
same basic problems. They must, for instance, periodically replace their energy ...
"Search- When internal conditions are intense enough to initiate ing" a particular
drive, an animal commonly behaves as if it behaviour were searching for the
correct environmental stimulus necessary to trigger the appropriate response.
The courtship behaviour of male hybrids, paired with female hybrids of this same
cross, is intermediate between that of the two parental-species males. When the
hybrid males are paired with parental-species females, their courtship behaviour
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review