Maybe it’s because I don’t have a pet dog but I just found this funny, Pet Chime, the doorbell for animals.
Portable Wireless Electronic Pet Doorbell: The Pet ChimeTM is a wireless doorbell for household pets to notify their master when they want to enter or exit the house. Our FCC approved radio frequency remote control door chime will emit one (1) of two (2) selectable responses – ding dong or dog bark – when the transmitter paw is pressed. The Pet ChimeTM comes complete with a wireless transmitter shaped like a dog’s paw and a receiver.
You can buy Pet Chime for $21.95, don’t leave your pets out in the cold this winter [Thanks Joe].