1. Birds and humans aren’t nature’s only singers. The record Songs of the Humpback Whale became a hit in the 1970s, showcasing their complex calls.
2. Recently, scientists have confirmed that some male mice perform songs to attract female mice, but in a frequency beyond human hearing.
3. Animals often sing to show off to mates or alert others about predators. But some researchers believe singing itself may give them pleasure, in the same way as in humans, by affecting the brain’s dopamine receptors.
