The Cougar, is a mammal of the family Felidae, native to the Americas. This large, solitary cat has the greatest range of any large wild terrestrial mammal in the Western Hemisphere, extending from Yukon in Canada to the southern Andes of South America. It is the second heaviest cat in the American continents after the Jaguar. Although large, the Cougar is most closely related to smaller felines.
Females reach sexual maturity between one-and-a-half to three years of age. They typically average one litter every two to three years throughout their reproductive life, though the period can be as short as one year. Females are in estrus for approximately 8 days of a 23-day cycle; the gestation period is approximately 91 days. Copulation is brief but frequent. Only females are involved in parenting. Litter size is between one and six kittens; typically two or three. Caves and other alcoves that offer protection are used as litter dens. Born blind, kittens are completely dependent on their mother at first, and begin to be weaned at around three months of age.
Source: en.wikipedia.org/wiki/Cougar - 14.04.2010
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