New mob idea for 1.21: Squirrels + Mob beds

Squirrels would spawn naturally in certain forests. The type of forest dictates the type of squirrel. Squirrels can be tamed, but only one at a time. Tamed squirrels will leave for 5 minutes a Minecraft day, and bring back food. They will bring one Enchanted Golden Apple the first time, and Apples, Carrots or Potatoes all future times. Squirrels are tamed using seeds. The type of seeds depends on the type of squirrel. For example, a white squirrel tamed with Wheat Seeds, or a black squirrel tamed with Melon Seeds. There could even be a rare red squirrel tamed with Nether Wart, obtainable through breeding similar to the blue axolotl. Wolves will attack squirrels.

Also included in this update could be beds for tameable mobs, so that when they die they can respawn. This includes Wolf Beds, Parrot Beds, Cat Beds, Squirrel Beds, Horse Beds, Donkey Beds and Mule Beds. All beds can be dyed to get different colours of beds.