apologies to blonde readers for this dog joke

I can't resist passing on this joke that came today in The Friday Funnies:

The veterinarian told the blonde that her dog needed some
exercise.

"You need to make sure the dog runs around," the doctor
said. "Try playing a game of fetch."

"I can't play fetch with my dog," the blonde said.

"Why not?" the doctor asked.

"Because," she replied, "He can't throw."

And Sheila, in her Pet Hates Cartoons blog has a treadmill joke. I'm glad Penny doesn't have to go on that one!