How mantis shrimps spar
Number of punches determines which one wins
![mantis shrimps sparring](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/06/sm_mantis-shrimp-V2_free.jpg?fit=860%2C460&ssl=1)
MANTIS SHRIMP SMACKDOWN Ritualized combat between mantis shrimps quickly turns to non-deadly blows; opponents use the last segment of their bodies to shield themselves and dissipate the force of the punches (coiled mantis shrimp at right).
Roy Caldwell