Mexican pygmy rattlesnake
- kingdom: Animalia
- phylum: Chordata
- class: Reptilia
- order: Squamata
- family: Viperidae
- genus: Crotalus
- species: Crotalus ravus
Chilpancingo de los Bravos
Guerrero- Huitzilac
Morelos- Tlacolula de Matamoros
Oaxaca- Acultzingo
Veracruz
Mexico
College Station
Texas
United States