Although media reports generally identify the animals as simply "coyotes", some attackers in northeast North America may be hybrids known as coywolves.
In the 30 years leading up to March 2006, at least 160 attacks occurred in the United States, mostly in the Los Angeles County area.
[2] In such situations, some coyotes have begun to act aggressively toward humans—chasing joggers and bicyclists, confronting people walking their dogs, and stalking small children.
[2] Although media reports of such attacks generally identify the animals in question as simply "coyotes", research into the genetics of the eastern coyote indicates those involved in attacks in northeast North America, including Pennsylvania, New York, New England, and Eastern Canada, may have actually been coywolves, hybrids of Canis latrans and wolves.
][citation needed] Not all the coyote attacks on adults in California between 1979 and 2003 reported by Timm, et al. resulted in injury.