Deer with a single horn

This photo provided by the Center of Natural Sciences in Prato, Italy, shows a deer with a single horn in the center of its head. The one-year-old Roe Deer - nicknamed 'Unicorn'' - was born in captivity in the research center's park in the Tuscan town of Prato. He is believed to have been born with a genetic flaw; his twin has two horns.