This post will tell you about donkeys!
Donkeys, simmilar to horses, can be saddled and ridden. Donkeys can be found in the plains and savanna biomes. They look like horses, but they have long ears and gray fur. They can be tamed, bred, and fed the same way as horses. However, unlike horses, you can equip a donkey with a chest to carry your items. All you have to do is interact with the donkey while holding a chest. Then sneak while interacting with the donkey to open the chest. If you breed a donkey and a horse, you get a mule, which can’t spawn naturally. Also, donkeys cannot wear horse armor.