Diurnality
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222904256
2008-07-01T17:55:11Z
88.107.232.100
[[WP:UNDO|Undid]] revision 222327243 by [[Special:Contributions/98.199.84.74|98.199.84.74]] ([[User talk:98.199.84.74|talk]])
{{Wiktionarypar|diurnal}}
In [[animal behavior]], diurnality indicates an [[animal]] that is active during the [[day]]time and rests during the [[night]]. Animals that are not diurnal might be [[Nocturnality|nocturnal]] (active at night) or [[crepuscular]] (active primarily during [[twilight]], i.e., at dusk and dawn). <ref>Gullan, P.J. and P.S. Cranston, 1994. The Insects: An Outline of Entomology. Chapman and Hall London. pg. 115.</ref> Many animal species are diurnal, including many [[mammals]], [[insects]] and [[birds]]. The diurnal pattern is often controlled internally by the [[circadian rhythm]] ([[endogenous]] rhythm) of the animal. In some animals, especially insects, external patterns of the environment control the activity ([[exogenous]] rhythms).<ref>Gullan and Cranston.</ref>
Some mainly nocturnal or crepuscular animals have been domesticated as pets and have changed into diurnal animals to coincide with the cycle of [[human]] life. Examples are pet [[dog]]s and [[cat]]s, which are derived from the [[wolf]] and the [[wild cat]]. However these animals may exhibit their species' original behavior when they are born [[feral]].
==Notes==
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[[Category:Ethology]]
[[Category:Circadian rhythms]]
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