You can’t teach an old dog new tricks, but I bet that this dog might be able to teach you a trick or two.
 
Sometimes, dogs get lonely. When there’s nobody available (or willing) to play with them, they’re left to their own devices. With so much time on their paws, is it any wonder that dogs will jump on anything that’ll keep them entertained?
 
In the video below, a clever pup knocks his ball over the fence. A passing stranger picks it up and tosses it over the fence to him. After a while, the dog knocks the ball over the fence again. Another passing stranger tosses the ball back to him.

In no time, the dog gets a pretty good game of fetch going with every single stranger that walks down his street. Best of all, none of the people passing by are wise to his little scheme.

Good dog.