Johnny Chuck in "Johnny Chuck Receives Callers"

Johnny Chuck and Jimmy Skunk both laughed. "No," said Jimmy Skunk, "he didn't eat it, but he lived on it just the same while he was asleep all winter. Don't you see he hasn't got a particle of fat on him now?"
"But how could he live on it, if he didn't eat it?" asked Ryder, staring at Johnny Chuck as if he had never seen him before.