The black-tailed rattlesnake or Crotalus molossus gets its name from the Greek word crotalon, which means little bell or rattle. It is a venomous species, easily identifiable by its black tail, rattle and its prominent black snout.
In general, a rattlesnake grows to a length that varies between 28 and 49 inches and can survive in a wide variety of habitats it can be found in mountains, wooded canyons and deserts.
It is mellow by nature and generally avoids encounters with humans. Its behaviour is subject to changes throughout the year, depending on the season.
For instance, a rattlesnake shows diurnal characteristics during spring, nocturnal characteristics during summer and usually hibernates in abandoned dens during the cold season.
Its diet includes vertebrates such as squirrels, rabbits, chipmunks and birds. This species is generally viviparous by nature and gives birth to 3-16 young ones.