I find it amusing when you cross the brown bear with a polar bear, you get similar behavior and physiology of both bears in the hybrid offspring. This doesn't surprise me but I'm sure it would certainly surprise many who do not have a concrete understanding of inheritance and the powers behind genetics.
What shocked me though was that this was not engineered by scientists, but was observed in nature. So we have become witnesses to the adaptation and interbreeding of bears in the wild (after shooting them in Canada, of course).
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