Tropical rattlesnake

Crotalus durissus



up to 1.8 m

dry savannahs and semi-deserts


Their Home

The tropical rattlesnake is the most widespread of all rattlesnakes: it can be found from central Mexico to southern Argentina. Its size and colouring vary depending on its origin.


It is the most poisonous of all rattlesnakes. Almost 75% of humans bitten will die. Victims can die of kidney failure several days after treatment.


Favourite Foods

The tropical rattlesnake eats small mammals and birds. In turn this rattlesnake is eaten by foxes, coyotes, large birds of prey and king snakes.

Good to Know

  • The tropical rattlesnake is very quiet and not aggressive.
  • They can replace their poisonous fangs. A new fang grows behind the old one, so they can have up to four fangs.
  • Tropical rattlesnakes possess cytotoxins as well as neurotoxins.
  • They are loners and only get together in the mating season. Up to 10 young are born anywhere from 180 to 270 days after mating.
  • Tropical rattlesnakes can live to between 15 and 20 years old.




Conservation status