Numbers of bears in captivity needs to be managed by two-pronged focus:
Bears in captivity need to exercise their great capacity for foraging for long periods of time; without this stimulation they are "purposeless and unchallenged." (Law & Reid 2010)
Bears in a captive environment need as much physical and mental enrichment as do primates. (Law & Reid 2010)
In a new enrichment strategy as of 2010, 2 exhibit spaces conncected for two young Grizzly Bears and an elderly Manchurian Brown Bear at the San Diego Zoo.
At the Ueno Zoological Gardens in Tokyo, Japan a Japanese Black Bear successfully hibernated during the winters of 2006/2007 and again in 2007/2008. (Itoh et al 2010)
Captive-born bears should not be released into the wild. (Huber 2010)
Image credit: © San Diego Zoo Global. All rights reserved.
Itoh et al (2010)
Law & Reid (2010)