Lions sleep most of the day, and they do their hunting at night. When they wake up and are ready to hunt, they usually roar.
“Lions use different calls when communicating with each other … The most famous of these calls is the roar. It is one of the loudest calls in the animal kingdom and can be heard from up to 8km away. The male’s roar is deeper and louder than the female’s. Lions roar to tell other lions where they are, to show how big they are and to warn lions from other prides to keep away from their home territory. They do this mostly just before sunrise and sunset when they are most active.”
6:30pm finds us watching five lions sleep. A group of two males and one female are together. They do the usual sleep-wake-sleep-wake-etc. Eventually they started roaring. A spectacular sight to witness.
Here is the video.