It wasn't until recently that I understood "three dog night." I always thought that meant spring up and shout "Jeremiah was a bullfrog. Was a good friend of mine..." Apparently 3 dog night refers to temperature. A 3 dog night means that to stay warm you needed 3 dogs in the bed with you. Thank you Cathy for explaining that to me.
We have 2 dog nights occasionally around here but usually its just a one dog night. Molly plays a game with me. She takes my spot in the bed until I'm ready to come to bed. It's funny and at the same time guarantees me a warm spot to settle into.