148 books • 18 series
Antelopes (Living Wild)
Chameleons (Living Wild)
Frogs (Living Wild)
Walruses (Living Wild)
Vultures (Living Wild)
Zebras (Living Wild)
Sea Lions (Living Wild)
Piranhas (Living Wild) (X-Books: Predators)
Camels (Living Wild)
Woodpeckers (Living Wild)
Cougars (Living Wild)
Tortoises (Living Wild)
Owls (Living Wild)
Rhinoceroses (Living Wild)
Komodo Dragons (Living Wild)
Pandas (Living Wild)
Jaguars (Living Wild)
Hummingbirds (Living Wild)
Whales (Living Wild)
Bison (Living Wild)
Bats (Living Wild)
Killer Whales (Living Wild)
Moose (Living Wild)
Alligators (Living Wild)