The anglerfish attracts prey with its built-in fishing pole, which dangles above its mouth on a long, flexible spine.
Photograph by Bluegreen Pictures, Alamy
Vampire bats feed on the blood of other mammals and have sharp, piercing front teeth for making small cuts in their prey.
Photograph by Michael Lynch, Dreamstime
The tusks of the babirusa—a species of pig found in Indonesia—grow out through the top of its snout.
Photograph by Ray Shiu, Dreamstime
Female tailless whip scorpions lay up to 60 eggs at a time. After they hatch, the mother carries the babies on her back.
Photograph by Visuals Unlimited, Inc., Michael Ready, Getty Images
Found in tropical seas, hatchetfish have large eyes that point upward. This way, they can spot prey swimming above them.
Photograph by Norbert Wu, Minden Pictures
Found in Madagascar, the giraffe weevil is named for its extra-long neck, which the males use to fight each other.
Photograph by Liewwk, Dreamstime
With snouts full of razor-sharp teeth, gharials snatch up fish and frogs in the rivers of northern India and Nepal.
Photograph by Siloto, Dreamstime
Look out! A cheetah’s color and spotted fur helps it blend in with its habitat while hunting for prey.
Photograph by Andrea Calandra, iStockphoto
Open wide! Basking sharks’ mouths can stretch over 3 feet (1 meter) across. But don’t worry—they eat tiny plankton, not people.
Photograph by Alan James, Minden Pictures
With its yellow eyes, leathery ears, and long fingers, the aye-aye looks creepy. But this rare lemur from Madagascar is harmless.
Photograph by Javarman, Dreamstime
Click the full-screen arrows in the upper right to read the captions!