one time I had a dream I was in a store, buying a Pokemon Plushie (Serperior!) then suddenly I was a dog. Not just any dog, but our dog that was, at the time, new. We had just gotten him. My brother was there too. He was my old dog who had recently died. We competed in a doggy game show and got little bones when we got one right. It was cute. I won. Then I woke up.
I had this dream in 2011. I still remember it because never, in any other dream, have I been a dog.