"What kind of dog can't live outside?" *Short-legged Doxens, illness-prone Pugs, tiny Pomeranians, near-hairless Grayhounds, and hundreds of other breeds that have been bred for virtual helplessness in the wild* : Sad doggy whimpers.
It's just a joke. I'm sorry if you didn't like my comment. It is supposed to be a reference to the infamy of a Scooby-Doo character named Scrappy-Doo and Family Guy made a reference of him.