If I could tame a wild animal
I'd pick a lion. Well, it can't be my rug. My rug is okay, since I'd put the lion outside with a bunch of bunnies. I'd have to buy or maybe plant lots of vegetables to feed the rabbits who in turn will be fed to the lion. I'd take my lion for a walk, brush its hair, give it a nice collar, gps tranceiver, sharpen its claws and brush its teeth.