King Cobras: Hooded Venomous Reptiles

Boa Constrictors: Prey-Crushing Reptiles

Komodo Dragons: Deadly Hunting Reptiles

Tuataras: Dinosaur-Era Reptiles

American Alligators: Armored Roaring Reptiles

Leatherback Sea Turtles: Ancient Swimming Reptiles

Galápagos Tortoises: Long-Lived Giant Reptiles

Thousand-Mile Fliers and Other Amazing Migrators

Trap-Door Spiders and Other Amazing Predators

Exploding Ants and Other Amazing Defenses

Platypuses: Web-Footed Billed Mammals

Snowy Owls: Stealthy Hunting Birds

Platypuses: Web-Footed Billed Mammals

Ruby-Throated Hummingbirds: Tiny Hovering Birds

African Elephants: Massive Tusked Mammals

Humpback Whales: Musical Migrating Mammals

Night Creatures: Animals That Swoop, Crawl, and Creep while You Sleep

Grizzly Bears: Huge Hibernating Mammals

Vampire Bats: Nighttime Flying Mammals

Night Creatures: Animals That Swoop, Crawl, and Creep while You Sleep