Sitting in a dog park, two dog owners are boasting about the intelligence of their respective pets.

"The smartest dog I ever had," said one, "was a German Shepard that could play cards. He was a genius at poker, but I had to put him to sleep."

"You killed a brilliant dog like that? He might have been worth a million dollars." "

Had to," replied the unrepentant owner, "Caught him using marked cards"