The Mexican lance-headed rattlesnake or lance-headed rattlesnake is a venomous pit viper species found in central Mexico. No subspecies is currently recognized.
The distinctive buzz of a rattlesnake is a highly effective predator-avoidance system. The rattle comes from a series of interlocking keratin rings that create a hissing sound when vibrated. Another ring is added to the rattle each time the snake sheds its skin.
Most snakes give a warning before they bite, although they may strike quickly if they are startled. When out walking in heavy brush or rocky areas, watch where you step or put your hands.
In their natural habitat, these snakes live at high elevations ranging from 4,750 to 8,500 feet.
This species is part of the AZA's Species Survival Plan (SSP).
Mesquite, grassland, and scrubland environments
24 to 31 inches in length
Amphibians, reptiles, insects, and small mammals
Birds, lizards, and larger snakes
Around 4 live young at a time
Up to 6 years