I rescued Charlie from a shelter about a year ago and since then, we haven't done much besides me petting him and letting him run around outside his cage. I want to incorporate training to give us more to do. I am not sure exactly how old he is, but the vet and I have guessed 2-3 years old. He was litter boxed trained by the time I got him, but I am not sure what else he can do. Is it too late to train him? If not, what can I train a bunny to do? He is my first rabbit and I only have experience with commands for dogs.