What is the most unusua indoorl pet you've heard of, had, or seen?

We've made friends with a guard at the hospital. He likes to tell us about his animals, we thought all goats. Today he went into his exotic deer. I don't remember the kind and how many. Not too many as he only has ten acres but two of the deer are house pets. He went in to detail how you box train them involved in putting something on a towel and then putting the towel in the box. He told us what all they like to eat and one day his wife left a pie out on the counter and one of the deer was on the counter eating it. Evidently they are very small but no thanks to animals on my counter. He said they will get into his  lap while he is watching TV. He didn't say if they have their own bed in their own room or maybe they sleep with him. We haven't had an invitation yet. Wouldn't mind seeing them with no food prepared in his kitchen involved. He is a very interesting man to listen to and seems to be knowledgeable about animals and plants.