a positive statement or declaration, often without support or reason: a mere assertion; an unwarranted assertion. 2. an act of asserting. Origin of assertion.
The Endangered Species Act has classified the grizzly bear as a threatened species in the continental United States. However in 2007 the bears were removed from the list at Yellowstone National Park. Other reserves where the bears reside include locations in Alaska, Montana, Idaho, Washington, and Wyoming.
Most grizzly bears spend their time alone except when breeding or raising cubs. Grizzly Bear Reproduction and Maturation. Grizzly bears often live to be around 20 to 25 years of age Mating occurs from May through July with a peak in mid-June. Female grizzlies begin bearing young at 3 to 8 years of age, and litter size varies from one to four cubs, with an average litter of two.