Male cheetahs have a specific bark that causes female cheetahs to ovulate 'on-demand.'

There’s an annual lying competition in England, competitors from around the world have five minutes to tell the biggest & most convincing lie they can.Politicians & lawyers are banned from entering because they are judged to be too skilled at telling lies.

The rat is the only mammal other than humans that can laugh.

The Huichol Indian men of Mexico tie ropes around their testicles when their wives are giving birth.
When she feels a painful contraction, she tugs on the rope so her husband will share some of the pain as part of their child’s entrance into the world.