With the trapper class I know it can tame animals and make them pets but I think it would be a good Idea to make a higher level version of the trapper called a Hunter and have them be able to tame beats that will attack for them such as wolves, so if you have a trapper and wolves appear and engage he can lay traps for them to then tame them and use them as pets to attack other creatures
I think a guy called the “big-game” hunter is already planned 
What is taming rabbits even useful for?
Taming rabbits is useful to waste food feeding them
They look funny. And you don’t have to feed the tamed animals. Also they need nearly no food at all.
Animal Trainer class was one of the Kickstarter goals.