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Cheetahs are the fastest animals in the world, but they can only run at top speed for a few minutes before slowing down. Cheetahs don't growl like other big cats, they purr. Cheetahs have excellent eyesight during the da... More »

www.reference.com Science Biology Zoology

The cheetah is the fastest land mammal and can run as fast as 60 to 70 miles per hour. This is about the same speed as a car on the interstate. Though fast, cheetahs can only run short distances, and they require up to 3... More »

www.reference.com Pets & Animals Mammals Large Cats

Although cheetahs are one of the smallest species of the big cats, they are the fastest mammals on land with bodies that evolved for speed. However, the cheetah is also the most endangered of the cats due to habitat loss... More »

www.reference.com Pets & Animals Mammals Large Cats
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If humans are viewed as animals, then they are the smartest animals in the world. If humans are excluded, then chimpanzees rank as the smartest animals. More »

www.reference.com Science Biology Zoology

Octopuses, orangutans, ocelots and ostriches are examples of animals that start with the letter "o." Common octopuses live in tropical and temperate oceans around the world, while orangutans are primarily concentrated in... More »

www.reference.com Science Biology Zoology

The top ten slowest animals in the world, ranging from fastest to slowest, are the manatee, Gila monster, nematode, seahorse, slug, koala bear, giant tortoise, garden snail, starfish and three-toed sloth. The three-toed ... More »

www.reference.com Science Biology Zoology

Despite their heavily armored and lumbering appearance, armadillos can reach a top speed of 30 miles per hour. In fact, most species of the armadillo group, including the common nine-banded armadillo, rely upon running r... More »

www.reference.com Science Biology Zoology