
When I opened the door I noticed my puppy was sitting by the door going to the potty. But what if I wasn't in the room to see him? doorbell help! It was easy to raise his paw and smack the bells with it when I saw him standing there. In just one day he connected [knock on the bells - the door opens - use the potty - stay outside for a while - knock another bell outside. Door-door opens-backwards] great! By the way, there are two sets of bells included in the package.

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