Mules and donkeys
Mules (left) and donkeys (right) are commonly confused because mules are part donkey. A mule is the love child of a female horse and a male donkey, and while mules generally can't mate, there have been several cases that prove fertility is possible. Because mules are only part donkey, they have larger ears, which they get from their moms. They also have taller, larger bodies, like a horse. Their teeth, tails and coats are also more equine than a donkey's.