Bothrops ammodytoides is known as "Yarará ñata" (Spanish for "short-nosed yarará"), making reference to its characteristic snout. Found only in Argentina in the provinces of Buenos Aires, Catamarca, Córdoba, Chubut, La Pampa, La Rioja, Mendoza, Neuquén, Río Negro, San Juan, San Luis, Santa Cruz and Tucumán. The vertical distribution ranges from sea level to at least altitude. The type locality was first listed as "northern Argentina" and later emended to "province of Mendoza" Campbell and Lamar (1989). The geographic range of "Bothrops ammodytoides" extends to 47° S Latitude, which may make it the world's southernmost snake. Prefers dry regions, occurring in temperate
Formosa Province up to 45 °C The tropical weather is characterized with uniform annual rains in the east (1000 mm annual), while in the rest of the country winter is a drier season (80 mm). The humidity variation results in the jungle vegetation on one side, and the Chaqueño forest in the other. The limit with the Salta Province is known as the "Impenetrable" ("Impenetrable"). Formosa's protected areas are the Río Pilcomayo National Park and the Formosa National Reserve. Coincidentally, part of the province is the antipode to northern Taiwan, which was also known as "Formosa". (Taiwan was named "Formosa" by European