We have four deer that play in our backyard. The other day it was raining out and my husband was getting out of the car. He said he stopped short because he thought he smelled a wet dog, so he stopped to look around for the dog. About ten feet away was a deer stairing at him - looking scared. My husband and the deer just stared at each other for about 30 seconds - both not knowing what to do. Then the deer starting wagging his tail (like a dog) and it actually smiled (I wouldn't have believed it if I didn't see if myself). Then the deer pranced away and started playing with the other three deer in our backyard and then they all ran off.
At least twice a week I look out my window and see them playing in the backyard. Although, I probably wouldn't like it so much if we owned the house since I have heard that they destroy your landscaping (they eat EVERYTHING!)