Beasts of Burden

Two-Headed Horse: A common variety, often used for transport and cart pulling. They take patience, as the heads sometimes don't get along.
One-Headed Horse: The more favorable of the two horse varieties, as they don't have bickering heads. Their personalities vary wildly, as do their patterns.
Donkey: Self explanatory beast of burden. Not much different from the Old World donkey... How they managed to avoid mutation is unknown. Oh and also they're carnivores, did I mention that?
Bulk-Up: An incredibly muscular donkey. They don't live as long, but they're well-valued for their strength.
Floral Elk: Massive elk, capable of carrying up to 300 lbs. They have manes, tufted legs, and flowers/vines entangling their bodies. They rely on their herd-mates or their humans in order to keep the plant growth trimmed; otherwise, it could easily trip them.