When I was younger (still living at my parent's house), a neighbor had a pet duck.

They also had a golden retriever, and sometimes I would see the dog and the duck playing (seriuosly--I am not kidding ) in their front yard. I have always thought it would be really cool to have a pet duck. I imagine they would be a messy pet but they are soooooooooooooooooo darn cute!!!!!