Editing Nocturnality (section)

==In captivity==

===Zoos===
In [[zoo]]s, nocturnal animals are usually kept in special [[Nocturnal house|night-illumination enclosures]] to invert their normal [[sleep-wake cycle]] and to keep them active during the hours when visitors will be there to see them.

===Pets===
[[Image:European hedgehog (Erinaceus europaeus).jpg|thumb|Hedgehogs are mostly nocturnal.]]
[[Hedgehog]]s and [[sugar glider]]s are just two of the many nocturnal species kept as ([[exotic pets|exotic]]) pets. Cats have adapted to domestication so that each individual, whether stray alley cat or pampered housecat, can change their activity level at will, becoming nocturnal or [[diurnality|diurnal]] in response to their environment or the routine of their owners. Cats normally demonstrate [[crepuscular]] behavior, bordering nocturnal, being most active in hunting and exploration at dusk and dawn.<ref>{{cite web|title=Nocturnal Activity in Cats|url=http://www.vcahospitals.com/main/pet-health-information/article/animal-health/nocturnal-activity-in-cats/212|publisher=VCA Antech|access-date=7 October 2012|author=Debra Horwitz|author2=Gary Landsberg|archive-url=https://web.archive.org/web/20130501063519/http://www.vcahospitals.com/main/pet-health-information/article/animal-health/nocturnal-activity-in-cats/212|archive-date=1 May 2013|url-status=dead}}</ref>