The Guinness Book of World Records has recognized a water buffalo from the Philippines as having the largest horn circumference of any animal. The water buffalo, named Carabao, has a combined horn circumference of 8 feet, which surpasses the previous record holder by over 6 inches. Carabao's massive horns have earned him the title of having the largest horn circumference of any animal in the world according to the Guinness Book of World Records.