Did you know that the cheetah is the fastest animal that lives on land? A cheetah's tail helps it make quick turns. Learn these and other interesting facts in “A Cheetah's World”.

Did you know that kangaroos belong to a group called marsupials? Kangaroo mothers keep their babies safe inside their pouches. Learn these and other interesting facts in “A Kangaroo's World”.

Giraffes are the tallest animals on land. They can grow to be 18 feet (5.5 meters) tall and weigh as much as 2,800 pounds (1,270 kilograms). Find out more in Giraffe, one of the titles in the Animals of Africa series.

Elephants are the largest animals that live on land. The heaviest elephant ever recorded weighed 24,000 pounds (10,900 kilograms). Find out more in Elephant, one of the titles in the Animals of Africa series

Did you know that polar bears spend more time underwater than any other bear? Polar bears live in the Arctic where it is very cold. Learn these and other interesting facts in “A Polar Bear's World”.

Dalmatians are the only truly spotted dog breed. A Dalmatian's spots can be black or brown. Learn more about these dogs in Dalmatians, part of the All About Dogs series.

Hippos spend more than 16 hours a day in the water. They can hold their breath underwater for five minutes. Find out more in Hippo, one of the titles in the Animals of Africa series.

Rhinos love to roll in the mud. The mud cools the rhinos down when the weather is hot and stops them from being bitten by bugs. Find out more in Rhino, one of the titles in the Animals of Africa series.

Did you know that rattlesnakes shed their skin three or four times each year? A rattlesnake's rattle gets bigger every time it sheds its skin. Learn these and other interesting facts in “A Rattlesnake's World”.

Lions are one of the biggest cats in the world. A lion's tail alone can measure almost 40 inches (102 centimeters) in length. Find out more in Lion, one of the titles in the Animals of Africa series.