Answer:
1. Food, such as grubs, insects, meat, etc. (anything your animal eats)
2. Trees or bushes so your animal can climb and gnaw
3. Other surrounding animals that will not potentially hurt your animal, such as small birds (just for entertainment)
4. A waterhole (not just a dish, as they should feel comfortable to drink whenever they please)
5. A private place where they can lay down and take a nap, without having someone watching them
6. Toys that suit your animal (if you have a leopard, maybe some balls with meat inside of them so the leopard can bat it around!)