This mod adds 29 ponies to the game.
Much like in real life, these ponies do very little. They do not spawn naturally, and must be summoned via commands or creative mode.
You can bring them home or leave them to roam. They'll just prance around regardless, lazy bums.
Aside from being cute living decorations, the ponies can be right clicked to make a squee sound, and thats it.
This mod also adds a hayburger to eat, and sunglasses to wear. The burgers are a nice sink for anyone with stacks and stacks of wheat, and the sunglasses are just stylish.