When I was growing up, I always had a cat and two dogs in bed with me. We each had our assigned spots. As I recall, I was allowed by the Pet Committee to occupy the northwest corner of the mattress where I slept in a compliant little ball.
Then one day I went on a semester abroad to London where I slept in a twin bed without pets. And it was AMAZING. And I did think to myself, "Who knew sleeping could feel like this?"
Tomorrow: Things I Didn't Know, Part Two.