Mexican prairie dog Mexican prairie dog The Mexican prairie dog ("Cynomys mexicanus") is a diurnal burrowing rodent native to Mexico. Treatment as an agricultural pest has led to its status as an endangered species. They are closely related to squirrels, chipmunks, and marmots. "Cynomys mexicanus" originated about 230,000 years ago from a peripherally isolated population of the more widespread "Cynomys ludovicianus". These prairie dogs prefer to inhabit rock-free soil in plains at an altitude of . They are found in the regions of southern Coahuila and northern San Luis Potosí in northern Mexico, where they eat herbs and grasses native to the plains
Dog type on dog types such as "hound" or "terrier". Some group categories cover more than one type; working dog refers to dogs that do some sort of work for humans, in contrast to companion dogs which are pets, although working dogs can also be companions, and companion dogs can do useful work. The terminology is unclear; see Working Group and Utility Group. Mixed-breed dogs can have any combination of working and companion functions and be of any type. Toy dogs are very small dogs of any type. See Toy Group. Ancient dog breeds are modern breeds genetically identified as descending from