| Order | Rodentia |
| Family | Heteromyidae |
| Genus | Chaetodipus |
| binomial name | Chaetodipus spinatus |
The Mexican spiny pocket mouse generally measures 12 cm in body length, with a tail of almost the same length. It weighs around 210 grams on average. This rodent prefers dry and arid habitats in Mexico and Texas.
Their fur is made up of a mixture of soft hairs and thick spines, which only develop in adult individuals.
They can store food in their cheeks and mainly feed on seeds and grass. The Mexican spiny pocket mice are nocturnal animals.