There is a low number of red American black bears in the east of North America.
Despite what their name suggests, American black bears can wear a range of colors: brown, cinnamon, blond, gray, even white.
And for the last 9,000 years, the color of some populations of American black bears has been changing to a reddish hue, according to researchers. The genetic and evolutionary factors causing this have been mostly unknown – until now. By sampling the DNA of 151 American black bears , the researchers identified a mutation known as R153C in a gene called tyrosinase-related protein 1 that appears to have been driving the change in fur color.
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