We live in California and it is usually warm most of the year, however the last couple of months have been cold, sometimes 46 in the morning and Miss Daisy does not like the cold. She found that our back door is somewhat lose in that it wabbles back and forth. At first we thought it was someone knocking on the door, so went to see and found that Daisy has figured out hitting the door with her paw will make me come to the door and let her and Perry in. This is not a light knocking, it sounds like the door is caving in. It gives us a good laugh every morning. I think that is pretty smart.