The document discusses several different types of mammals. It describes the whale shark as the biggest mammal, growing over 50 feet long and weighing over 18 metric tons. It notes that cheetahs are the fastest land animal, able to run almost 60 miles per hour. Elephants are described as the largest land animals, with males living alone and females living in family groups to raise young. Lions are portrayed as the "king of the beasts" with loud roars that can be heard over 5 miles away. Giraffes have the title of tallest land animal, sometimes growing over 20 feet tall. Tigers are called fierce hunters that can kill prey with a single bite. Kangaroos are marsupials that carry their joe