Walrus Group

Atlantic walruses look for some personal space in Alaska’s Togiak National Wildlife Refuge. Both male and female walruses grow tusks, which are simply canine teeth that continue to grow throughout their lives. Tusks range in shape and size and are not proportionate to body size. Some walruses have been found with tusks protruding 3 feet (0.9 meters) from their mouths.

Tiger!

Tigers hunt by creeping stealthily and lying in wait. When prey is close enough, they attack with a fatal pounce.

Bactrian Camel

Bactrian camels have shaggy fur and two humps to help them cope with the temperature extremes of the Gobi desert and surrounding grasslands.

Coiled Prairie Rattlesnake

This prairie rattlesnake is poised to strike. Adult rattlesnakes, unlike juveniles, are able to regulate the amount of venom in their bites.

Coiled Western Diamondback Rattler

Western diamondbacks are among the most aggressive species of rattlesnakes and have a striking distance up to 66 percent of their body length. They do not shy away from confrontation, and their bites have been the cause of several recorded deaths.

Emperor Penguin Baby

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Emperor Penguin Baby

Photograph courtesy NOAA

Wings spread wide, an Antarctic emperor penguin baby awaits its next meal.

Sleeping Weddell Seal

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Sleeping Weddell Seal

Photograph by Ralph Lee Hopkins

Weddell seals are known for their docile nature and are easily approached by humans.

Animals of Antarctica

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Adélie Penguin

Photograph by George F. Mobley

Wings spread, this Adélie penguin waddles through an Antarctic colony. Its black tail gives it a tuxedo-like appearance

Froghopper

Froghopper

Photograph by Jupiterimages

The froghopper, or spittle bug, leaps into the record books as the insect world's greatest jumper. This tiny insect reaches a mere 0.2 inches (6 millimeters) in length but can catapult itself up to 28 inches (70 centimeters) into the air. A human with this ability would be able to clear a 690-foot-tall (210-meter-tall) skyscraper.

Rhinoceros Beetle

Rhinoceros Beetle

Photograph by Jupiterimages

Compared to an elephant, the rhinoceros beetle looks minuscule. But ounce for ounce, this insect is considered the world's strongest creature Rhinoceros beetles, which get their name from the hornlike structure on a male's head, are capable of carrying up to 850 times their own body weight. A human with this relative strength would be able to lift some 65 tons (59 metric tons).

African Elephant

African Elephant

Photograph by Beverly Joubert

For thousands of years, humans have utilized the brute strength of African and Asian elephants for everything from war to transportation. An elephant's trunk alone contains around 100,000 muscles and can lift up to 600 pounds (270 kilograms)

Great Horned Owl

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Great Horned Owl

Photograph by Joel Sartore

The most common owl in North and South America, the great horned owl is a hard-working partner and father. In late winter, while his mate stays on the nest with their clutch of two or three eggs, the male heads off to find food for both of them, carrying rats, mice, and squirrels back to the nest. Once the chicks hatch, his job gets harder—he now has to feed an additional two or three mouths.