Kaadu

Kaadu are large two-legged creatures native to the swamps of planet Naboo. They live in big herds, foraging in the wetlands of their homeworld and trying to avoid predators from land and from water. Kaadu are fast runners, reaching speeds of 50 miles per hour. They are also excellent swimmers, being able to stay up to two hours underwater, without breathing. Kaadu are oviparous. They're used as mounts by Gungans.