Pegasus, a winged horse and Hercules' companion who was given to him by Zeus as a present.

Zeus: Well, let's see here.. we'll take, hmm, yes, a little cirrus, and, hmm, a touch of nimbostratus, and a dash of cumulus.
[Zeus moves his hand with a little pegasus-shaped cloud on it closer to baby Hercules and the cloud turns out to be a baby pegasus]
His name is Pegasus, and he's all yours, son.
[Baby Hercules bonks his forehead against Baby Pegasus', he whinnies and licks Hercules, they hug, all gods sigh]

Pegasus: Hercules / Disney (c)

I decided to keep his leg after all