Kangaroo

Photo by Fadzil Hisham
The kangaroo is a marsupial from the family Macropodidae (macropods, meaning "large foot"). Kangaroos are indigenous to Australia. There were about 34.3 million kangaroos lived in Australia in 2011.


Kangaroos have large, powerful hind legs, large feet adapted for leaping, a long muscular tail for balance, and a small head. They can leap some 30 feet (9 meters) in a single bound, and travel more than 30 miles (48 kilometers) per hour. Like most marsupials, female kangaroos have a pouch on their belly, made by a fold in the skin, to cradle baby kangaroos called joeys.

Photo by Fadzil Hisham
Newborn joeys are just one inch long (2.5 centimeters) at birth, or about the size of a grape. After birth, joeys travel, unassisted, through their mom’s thick fur to the comfort and safety of the pouch. A newborn joey can’t suckle or swallow, so the kangaroo mom uses her muscles to pump milk down its throat. At around 4 months, the joey emerges from the pouch for short trips and to graze on grass and small shrubs. At 10 months, the joey is mature enough to leave the pouch for good.

Photo by Fadzil Hisham
There are four extant species that are commonly referred to as kangaroos, the red kangaroo, eastern grey kangaroo, western grey kangaroo and the antilopine kangaroo. Kangaroos have single-chambered stomachs unlike those of cattle and sheep, which have four compartments. They sometimes regurgitate the vegetation they have eaten, chew it as cud, and then swallow it again for final digestion. Different species of kangaroos have different diets, although all are strict herbivores.

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