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
Breed type (dog) English Mastiff standard cautions, "Judges should also beware of putting a premium on showiness." "Breed type" usually takes into account the work the original dog type from which the breed was developed was bred to do. In order to counterbalance the overuse of appearance in awarding championships, some major registries and breed clubs have instituted performance events as part of the awards at conformation shows. Dog type, "breed type", dog breed, and purebred dog breed are at times all used interchangeably, but they all have distinct meanings. "Types of dogs" are varieties developed for a specific work; they may be