PetSafe Electronic SmartDoor
Getting a doggy door for your pup is a pretty complicated decision. On one hand, you want your dog to be able to go in and out at its leisure, but what about any household cats? Or what if other people's dogs—or even wild animals—get in your house, too? PetSafe's Electronic SmartDoor offers one solution via a contraption only your dog can open. Attach a “smart key” to your dog's collar and the key triggers the door when he or she stands in front of it. Otherwise, it stays locked. Prices start at $134.95. Only downside: it could give your dog an inflated sense of entitlement. www.petsafe.net.