You should be able to domesticate animals. You could use them for milk, eggs, riding, or food for a bigger animal. Certain animals should be bred with different foods depending wether they are carnivores, mammals, reptiles, biome they are in etc.
I know that they are adding pets later on. Not sure what all they will be able to do though. Love your suggestion
I have no idea haha sorry. Just the more views/replies you get the more popular the thread will become so hopefully it becomes noticed by the devs. Good luck!!