The Red Kangaroo is a common marsupial from the plains and dry grasslands of Australia. They can hop up to 40 miles per hour (74 kph) and go over 30 feet (9 m) in one hop. Females are faster than males and are called a doe, flyer, roo, or jill. An adult male is called a buck, boomer or jack. A baby is called a joey. These shy animals live about 6 years in the wild and up to 20 in captivity. They are nocturnal (most active at night). Kangaroos are considered pests due to the damage they do to crops. A group of roos is called a mob. They have a life span of 9-12 years
Anatomy: The Red Kangaroo male is up to 4.6 ft (1.4 m) long, weighing up to 150 pounds (68 kg). Females are smaller, up to 3.6ft (1.1 m) long, weighing up to 80 pounds (36 kg). The soft, woolly fur is usually blue-gray on females and often reddish-brown on males. Females have a pouch in which the young live and drink milk.
Diet: These herbivores (plant-eaters) eat grass, leaves, and roots. They swallow their food without chewing it and later regurgitate a cud and chew it. Roos need very little water; they can go for months without drinking, and they dig their own water wells.