The twin-spotted rattlesnake is a relatively small and slender species of venomous pit viper native to the southwestern USA and northern Mexico. Quertaro dusky rattlesnakes are typically found in open grassy and rocky habitats north of the Trans-Mexico Volcanic Belt, an active volcanic belt that covers central-southern Mexico. With a whopping 400 different species of snakes, Mexico is one snake-lovers paradise. } When traveling to Mexico, most people think about long stretches of white sand beaches. Subscribe to Travel Snippet newsletter for free travel tips and inspiration. Venomous Snakes in New Mexico Examining a snake's pupils is another method that can be utilized to identify venomous versus non-venomous snakes. When hunting rodents and other small mammals as prey, this snake wraps around its victims body with such force that all the l air escapes from the animal through constriction. However, chances for survival are very good if medical attention is sought as soon as possible after a bite. Below we look at some of the most common and harmless snakes in Mexico, before moving on to snakes that are dangerous to humans, where theyre found, how to avoid them and what to do if bitten.