North America

  1  Feeble but common The eastern worm snake (Carphophis amoenus) is a tiny species of the eastern USA, which

  1  A sand rummaging snake The long-nosed snake (Rhinocheilus lecontei) is a harmless species found in the southern USA

  1  Coahuila black-headed snake Maximum length: 23.2cm. The smallest species in the US is one which has only ever

  1  Eastern garter snake Latin name: Thamnophis sirtalis sirtalis. The archetypal common garter snake, and the most common subspecies

  1  Common garter snake Maximum length: 137.2cm. States inhabited: 47/50. The common garter snake is a species familiar to

  1  Most northerly: prairie rattlesnake Maximum length: 151.5cm. Our first record was a tricky one to award, as both

  1  Kirtland’s snake (Pennsylvania) Maximum length: 62.2cm. Scientists are working furiously to investigate the 4000 snake species on Earth,

  1  Speckled racer Maximum length: 127cm. The USA has many snakes which straddle the border with Mexico, but there’s

  1  Black-tailed rattlesnake The black-tailed rattlesnake is one of the easiest venomous snakes to recognise in the entire USA.

  1  The offshoot coral snake The US is home to 2 coral snakes of the vast Micrurus genus, which