Bears are well known omnivores. They are animals that eat both plant and animal matter including insects, plant matter, berries, tree cambium, fish and red meat.
At the North American scale, a high degree of available foods appear on the bear menu. Large salmon runs or even whale carcasses are available along the Alaskan Coast. Caribou range Northern Alberta. Huckleberries, whitebark pine, deer and elk litter the Rocky Mountains.
Composition of diet has been shown by to affect physical size, reproductive potential and survival. Specifically for bears, wildlife sciences have used ratios between...
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