Hilda and Henry are truly horrible: they quarrel, squirt their parents with the hose, have food fights, and generally behave in a way that is a lot funnier in fiction than in real lite. So their parents give them to the zoo, where they are welcome as ""new animals."" But--like the children's parents--the other animals don't care for the children's incessant teasing, so the keeper puts them in with a ferocious-looking lion--who eats their supper and frightens them so much that they finally reform and are taken home, the lion with them to ensure model behavior. Only the last illustration suggests that mischief still lurks. Children are sure to be amused by the gleefully exaggerated pranks here, which Clark illustrates with her usual zest.