A male whale is called a bull. A female whale is known as a cow, and a baby whale is called a calf. In some species, cows are larger than bulls. A group of whales is called a pod, herd, school, grind or gam.
Whales are some of the largest animals that ever lived. The blue whale, for example, can grow to 100 feet long and weigh up to 200 tons.
Whales are also very long-lived animals. The blue whale's average lifespan can be up to 90 years, and the bowhead whale has been known to live up to 200 years.