In most other mammals, like dogs, sheep, rabbits, and horses, mutations in a protein called Mc1r lead to red hair color, but ...

Melanocytes from orange cats were found to make 13 times as much RNA from the gene Arhgap36. The gene is located on the X ...

Yet humans seem to have a sweet spot for orange cats. Videos of their antics fill the internet, and gingers get the leading roles in TV and movies too (think: Garfield, Heathcliff, and Puss in Boots).

What exactly gives some of our furry friends their signature orange fur? Geneticists say it's actually been a mystery for more than 60 years -- until now.

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