U-Goat

A U-goat is creature native to the horseshoe continent on Eamon described by Rick Volberding in the adventure Museum of Unnatural History, named for its U-shaped horns. It attacks by butting enemies in the stomach, then using its big belly to stomach enemies in the butt. At least one specimen is held by the Museum of Natural History in Evenhold; it has a hardiness of 15, agility of 10, and a 1d5 attack.