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Animals use communication to tell others about their territory, find a mate, make friends, let others know how they feel, start and stop fights, and warn others of danger.Here are some of the more unusual ways that animals talk.
Dogs bark, cats meow, birds chirp.We're pretty familiar with these forms of communication.But animals use sounds in other ways, too.To find a mate, the male ruffed grouse stands on a hollow log and beats his wings, making a drumming sound.The hollow log amplifies the sound so that it can be heard for up to a quarter of a mile.Mole rats(鼹鼠)use a banging sound for the opposite reason.They like to live alone.So they warn other mole rates to stay out of their way by banging(猛撞)their heads on the top of their tunnels(地道).
Animals use touch to communicate in many ways.Biting, kicking, and hitting send obvious messages, but touch can also be used in friendly ways.Chimpanzees(黑猩猩)will touch hands to greet each other.Many primates groom each other as a way to show friendship, removing bits of dirt or insects from each other's fur.Elephant may touch trunks in greeting.
Dancing is another way to talk.When a bee wants to tell other bees where to find a good stash of nectar(花蜜), it performs a special dance, waggling its body and moving in ways that tell the other bees which direction to go and how far to fly.
Some creatures even put their message in lights.Each type of firefly has its own flashing code.This helps males and females find mates of the same species.The lights not only tell what kind of firefly it is, they also guide the insects to each other.Color can also be important.The cuttlefish turns different colors to show how it feels.When it's ready to fight, it turns a dark color.
Another way to communicate without actually being there is through smell.
A gazelle(瞪羚)has special scent glands(臭腺)near its eyes that it rubs on branches to mark its territory.When other gazelles pick up the smell, they realize that this territory has already been claimed.Many animals mark territory by smell, including domestic cats and their wild cousins.
The ways animals communicate are as varied as the creatures and the messages they want to send.By observing carefully, we can learn more about what they mean.