Donkeys are the newest mountable animal in the game. They are smaller and slower than horses, but can take higher falls without getting hurt. They can jump fences, so you need to use double fences to keep them in. They are very stubborn, and will stop and refuse to move while you are riding them. To get them to move again, just feed them a sappling, flower, tall grass, or ivy. They will drop their saddle when killed, unless killed by fire.