A Marine Animal Digimon that became able to move on land, and is covered in temperature-maintaining fur. The short, white fur that covers its body gets longer as it grows, and furthermore, it's said that it turns brown when it grows up. Its personality is a naughty-boy type that fiddles with everything it sees. The red fur growing along its back from the top of its head moves according to Gomamon's emotions, and when it gets angry the fur bristles. Gomamon's claws are strong enough to easily break through solid ice.