Pits have a lot of energy, so he would be miserable on the leash..plus, studies have shown that chaining a dog raises the risk of aggression. You're going to have to teach him not to chew on things (it can be hard, I know, but not impossible) and play time is a must. If you feel you have to cage him while you're not there, that's fine, but as long as you're with him, there's no reason for him to be in the cage. Pits are eager to please and are fast learners...they are also stubborn and hardheaded. But I don't think there's a more loyal breed. He might mope a few days (or longer) for his old owner. Playing and petting him can help ease his anxiety. Lots of love, attention and training will make him an ideal pet.Also, limit the number of visitors for the first couple of days. He's getting used to a new place, and sometimes too much change can make a dog nervous, irritable and upset.As far as food, the safest thing is stick with dog food. You can ask your vet for a list of food he can have, or look it up online, but reports will vary. Some dogs have sensitive stomachs and different things will make them sick. (w/ Bosco, a rott/choc lab mix, french fries are the devil) Good luck!
)