A unique puppy that has been named Narwhal was found on the streets by a rescue group called Mac’s Mission in Missouri, USA. Unlike other puppies, Narwhal has a tiny tail between his forehead. He has been named after the marine animal, the Narwhal whale. A video of the ‘unicorn puppy’ instantly went viral on the internet. According to Professor Margaret Casal from the University of Pennsylvania School of Veterinary Medicine, USA, the tail belongs to Narwhal’s parasitic twin.