When a male horse breeds with female donkey you get the reverse of mule What do get?

You're close! It's not the "reverse" of a mule, but a very similar animal called a hinny.

Here's the breakdown:

* Mule: Male donkey (jack) + Female horse (mare)

* Hinny: Male horse (stallion) + Female donkey (jenny)

Both mules and hinnies are sterile hybrids, meaning they can't reproduce.