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Seminole Heights, Florida -- Keep your eyes peeled if you're down by the Hillsborough River. If a post on Facebook is to be believed, you might catch a glimpse of a two-headed alligator!

Justin Arnold posted a photograph over the weekend that he claims is of a two-headed gator on the riverbank in Seminole Heights.

10 News has not been able to verify the authenticity of the photo, and the Florida Fish and Wildlife Conservation Commission tells us they've received no reports of a two-headed alligator in the area, despite Arnold's claims otherwise.

Even if this picture is a hoax, two-headed animals have been known to exist in nature. The condition, known as polycephaly, is more common than you might think in reptiles, although two-headed animals rarely live long.

"Conventional knowledge is that when these deformities occur, the hatchlings do not survive unless cared for [by humans] and often, not even then," says University of Florida professor Dr. Frank Mazzotti. The UF "Croc Doc" would only say that the chance of finding a two-headed alligator in the wild as simply being "not impossible."

A two-headed albino snake was born in captivity in Florida a few years back, and last year a two-headed turtle dubbed "Thelma and Louise" was born at a Texas zoo.

GALLERY: More pictures of two-headed animals!

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CHOMP! More Florida Alligator stories

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