147 books • 17 series
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)
Gorillas (Living Wild)