Home ranges overlap; males have larger (100-125 sq. mi) ranges that females (24-50 sq. mi). North American densities vary from one black bear per 0.9 - 76 sq. mi. Costello, C. 1992. Black bear habitat ...
In prehistoric North America, the short-faced bear (Arctodus simus ... Twenty thousand years ago, lions roamed the entire planet. The American cave lion (Panthera atrox) called this continent ...
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