늑대의 평균수명은 얼마인가?
Charles Darwin was told that there were two types of wolf living in the Catskill Mountains, one being a lightly-built, greyhound-like animal that pursued deer, and the other being a bulkier, shorter-legged wolf. The eastern wolf's fur is typically of a grizzled grayish-brown coloration mixed with cinnamon. The flanks and chest are rufous or creamy, while the nape, shoulder and tail region are a mix of black and gray. Unlike gray wolves, eastern wolves rarely produce melanistic individuals. The first documentend all-black eastern wolf was found to have been an eastern wolf–gray wolf hybrid. Like the red wolf, the eastern wolf is intermediate in size between the coyote and gray wolf, with females weighing on average and males . Like the gray wolf, its average lifespan is 3–4 years, with a maximum of 15 years. Their physical sizes that sets them intermediate between gray wolves and coyotes are actually believed to be more related to their adaptations to an environment with predominately medium-sized prey similar to the case with the Mexican wolves in the southern USA rather than their close relationship to red wolves and coyotes.
its average lifespan is 3–4 years, with a maximum of 15 years