Jules Feiffer

When George's mother tells her son to bark, he meows. She patiently explains that "Cats go meow. Dogs go arf. Now, bark, George." But he quacks! Then oinks. Then moos. Becoming less patient and more exasperated, George's mom takes him to the vet, who reaches deep down inside the errant pup, and, much to everyone's surprise, pulls out a cat! Then a duck, a pig, and finally a cow. George is cured, and barks at last! On the way home, his proud mother...