pampas
Amazonian
Bufo boreas
western toad
Patagonia
Mojave
Mojave Desert
Mohave
Mohave Desert
southland
Amazonia
Guadalupe Mountains
Guiana
Baniwa
Gila Desert
Deep South
Chihuahuan Desert
Llano Estacado
Southeast
southeastern United States
Piedmont
Orellana
Coast Mountains
Tidewater region
Coast Range
South America
Australian Alps
Tidewater
Campinarana
Wyo.
WY
Wyoming
Plains
Sonoran Desert
Middle America
Equality State
Texas storksbill
Crotalus horridus horridus
igarapé
plainsman
Erodium texanum
Crotalus tigris
banded rattlesnake
tiger rattlesnake
timber rattlesnake
Bad Lands
sharp-tailed grouse
Badlands
Trimorphodon lambda
southwestern United States