Caption:  This is the story of walls the dog and his cat buddies Doppy and Puddy. Walls liked to walk about like a human when he thought no one was looking. When people were looking he pretended to be a dog again "neat trick 4 a Parsons Russell?"

This is walls's strange sister Puddy, she is a cat. Now that is strange because he's a dog. Probably only his half sister really although they are really good chums anyway.