Deep in America’s Sonoran desert we find a world class free-style wrestler, the Gila monster. The mating season is the signal for the competition bouts to begin.

Like wrestling, the aim is to pin down the opponent through a series of specialised moves.

Without powerful gripping arms, these monsters use their jaws to wrestle opponents into submission.

There are no referees, yet gila monsters abstain from any life threatening manoeuvres.

Deep in America’s Sonoran desert we find a world class free-style wrestler, the ...