Crotalus Tigris, commonly known as the tiger rattlesnake, is a venomous snake found in the southwestern United States and into Mexico. When it comes to synonyms for the species, one option is to use the scientific name, as this refers specifically to this species. However, other ways to refer to the snake might include terms like diamondback, rattler, or simply tiger snake. These terms all describe the snake in different ways, with diamondback referring to the pattern on its skin, rattler describing the sound it makes, and tiger snake referring to its coloring and pattern. Other synonyms might include vipers or pit vipers, which are broader categories of snakes that include Crotalus Tigris along with other species.