I have a collie/shepard mix named Buddy. We saved him from the pound cause Drakus wanted a puppy. And I wanted him to learn some responsibility. I did tell him and his mom that I would not:feed it, water it, pick up it's feces, and/or anything else aside from pet it. They think I'm mean; however, I'm being honest in that I do not want to clean up or take care of an animal.
We have two cats that we inherited when we moved into the house. They're porch cats. We put food and water in their bowl; however, it wouldn't bother me if they wandered off and never came back.
Drake had a turtle, but we let it go at the zoo. He was begging for a hamster; however, I told him no. I just do not want to have to clean up another cage on a consistent basis or hound him to clean up after an animal. So he settled for a couple hermet crabs.