Rabbits with 'horns' in Colorado are being called 'Frankenstein bunnies.' Here's why

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FILE - This June 26, 2013, image made from a video provided by Gunnar Boettcher shows a rabbit in Mankato, Minn., that Boettcher dubbed "Frankenstein," due to what looks like horns growing out of its head. (Gunnar Boettcher via AP, File)