When do lions roar?

A group of biologists and speech scientists studied how lions and tigers roar by examining and testing tissue from the larynges of three lions and three tigers from the Henry Doorly Zoo in Omaha that had been euthanized because they were old and sick. read more

Lions use their roar as a way to remind other lions that they are in control over an area. Another reason for the lion's roar is to reconnect with lions who might have traveled farther away while hunting or roaming. This allows the lions to find one another again and to check in with one another. read more

There’s immense social pressure to roar back; in time, the two cats with an issue will roar, as well. After all the roaring, the two cats seem to forget why they were fighting in the first place. It’s like taking time off and counting to ten. read more