A group of kangaroos is called a mob. Young kangaroos are called joeys. No two zebras have stripes that are exactly alike. Zebras enemies include hyenas, wild dogs, and lions. Male zebras are called stallions.
Zebras usually travel in herds.
It s hard to digest, and it has little nutritional value. But reindeer fill up with lots of moss. The moss contains a special chemical that helps reindeer keep their body fluids warm. When the reindeer make their yearly journey across the icy Arctic region, the chemical keeps them from freezing much as antifreeze keeps a car from freezing up in winte r Some scientists believe that the earth began billions of years ago as a huge ball of swirling dust and gases. If you dig in your backyard, don t worry about running into the earth s core.