Of all the endearing behaviors our cats demonstrate, the wiggle-and-pounce ranks high on the list. We’re talking about the low crouch and butt wiggle that precedes a cat springing on its prey.

Nobody knows exactly why domestic cats — as well as some large wild cats — act this way, but there are a number of theories. One of the main theories suggests that cats wiggle their back end to fine tune their vision, balance and muscles before they pounce. They could be testing surface traction and support before a powerful leap. It may even be that the dopamine released when a cat plays and hunts just makes them feel good.

Whether we humans find the explanation or not, the pre-pounce butt wiggle is one more reason to love our feline friends.