Mexican prairie dog of prairie dogs and associated species, such as shorebirds and birds of prey. Pronatura Noreste, as of February 2007, has signed conservation easements with "ejidos" and private owners for the protection of more than 42,000 acres (170 km) of Mexican prairie dog grasslands. 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
Prairie dog a few eastern locales. Despite the name, they are not actually canines. Prairie dogs are named for their habitat and warning call, which sounds similar to a dog's bark. The name was in use at least as early as 1774. The 1804 journals of the Lewis and Clark Expedition note that in September 1804, they "discovered a Village of an animal the French Call the Prairie Dog". Its genus, "Cynomys", derives from the Greek for "dog mouse" (κυων "kuōn", κυνος "kunos" – dog; μυς "mus", μυός "muos" – mouse). The black-tailed prairie dog ("Cynomys ludovicianus") was first described by Lewis