The 6-year-old Brittany Spaniel has gone viral on social media thanks to his impressive ability to walk significant distances in his hometown of Ouray, Colorado while standing on his hind legs.

Abby and Brittany Hensel were born in 1990 and quickly found fame due to their condition. As dicephalic parapagus twins, with two heads next to each other on one larger torso, they defied the odds ...