In Bark, George by Jules Feiffer, George is a small dog with a big problem. When his mother tells him to bark, he can't. Instead he says, "Meow," not quite the sound his mom was expecting. George keeps trying, but to his mother's growing frustration, he can only produce the sounds of other animals, like "Oink" or "Moo." Finally George's mother takes him to the vet who promises to get to the bottom of the problem. The cause of George's unusual sounds is even funnier than the idea of a dog who quacks.