Select Tallest Mammoth Donkey Romulus is 12 years old and has been measured at 17 hands (68 inches, 173 cm) from hooves to withers, two inches taller than the former tallest donkey, Oklahoma Sam. Romulus weighs about 1,300 pounds (590 kg). Romulus and Remus are American Mammoth Jackstock donkeys, the world’s largest donkey breed.

Breed: American Mammoth
Title: World’s Tallest Donkey
Height: 68 in (172.72 cm)