Who's Looking After the Zoo?How do you weigh a panda? Or check a sea lion's tooth? Or figure out why a llama is limping? These are just some of the many tasks veterinarians, technicians, and animal keepers at the Smithsonian's National Zoo are trained in. With full-color photos and lively, accessible text, this new title looks at the very busy "to do” list of zoo workers as they take care of their creatures large and small.