Pituophis catenifer is a species of nonvenomous colubrid snake endemic to North America. Nine subspecies are currently recognized, including the nominotypical subspecies, Pituophis catenifer catenifer, described here. This snake is often mistaken for the prairie rattlesnake, but can be easily distinguished from a rattlesnake by the lack of black and white banding on its tail and by the shape of its head, which is narrower than a rattlesnake's.
Sonora is a genus of small harmless colubrid snakes commonly referred to as ground snakes, which are endemic to North America.
Crotalus mitchellii is a venomous pit viper species in the family Viperidae. The species is endemic to the Southwestern United States and adjacent northern Mexico. The species was named in honor of Silas Weir Mitchell (1829–1914), an American medical doctor who also studied rattlesnake venoms. Five subspecies are currently recognized, including the nominate subspecies described here.
Crotalus enyo, commonly known as the Baja California rattlesnake or Lower California rattlesnake, is a pit viper species native to the coast and islands of northwestern Mexico. Like all other pit vipers, it is venomous. Three subspecies are currently recognized, including the nominate subspecies described here.
The western ground snake is a species of small, harmless colubrid snake. The species is endemic to North America. Its patterning and coloration can vary widely, even within the same geographic region. Another common name is miter snake referring to the head marking which suggests a bishop's miter; the synonym "episcopus " is a similar allusion.
Tantilla hobartsmithi, commonly known as the southwestern blackhead snake, is a species of small colubrid snake native to the southwestern United States and northern Mexico.
Drymobius margaritiferus, commonly known as the speckled racer, is a species of nonvenomous colubrid snake native to the Americas. The specific name, margaritiferus, means "pearl-bearing" in Latin, referring to the pearl-like spots on the dorsal scales.
Crotalus angelensis, or the Ángel de la Guarda Island speckled rattlesnake, is a pitviper species endemic to Isla Ángel de la Guarda in the Gulf of California, Mexico. Like all other pitvipers, it is venomous. It is sometimes treated as a subspecies of Crotalus mitchellii.
Salvadora hexalepis, the western patch-nosed snake, is a species of non-venomous colubrid snake, which is endemic to the southwestern United States and northern Mexico.
Ctenosaura hemilopha, also known as the Baja California spiny-tailed iguana, is a species of spinytail iguana endemic to Baja California. It is arboreal and primarily herbivorous, although it can be an opportunistic carnivore. Males may grow up to 100 centimeters (39 in) in length, while females are smaller, with a length of up to 70 centimeters (28 in). Five subspecies are currently recognized.
Sauromalus klauberi, commonly called the Catalina chuckwalla or the spotted chuckwalla, is a species of chuckwalla, a lizard in the family Iguanidae. It is endemic to Mexico The species was first described in 1941.
The western black-headed snake, also known as the California black-headed snake, is a snake species endemic to the Californias, as north as the San Francisco Bay and as far east as western Utah, and Texas. It lives in mostly moist pockets in mostly arid or semiarid environments and spends much of its life underground. It has a flattened head as most crevice-dwellers and is seven to fifteen inches in size. It is brown, slender, olive-gray, with a black head bordered by a white collar. Its habitat is often in woodland, desert areas, grassland and along arroyos in areas that are wet in a usually dry region.
Jay Mathers Savage is an American herpetologist known for his research on reptiles and amphibians of Central America. He is a past president of the American Society of Ichthyologists and Herpetologists, the Society of Systematic Biologists, and the Southern California Academy of Sciences. He received his bachelor's (1950), master's (1954), and doctoral (1955) degrees from Stanford University. He has produced around 200 publications, including the books Evolution and The Amphibians and Reptiles of Costa Rica. He is an emeritus professor at the University of Miami and adjunct professor at San Diego State University.
Diplodactylus savagei, known commonly as the yellow-spotted Pilbara gecko, is a species of lizard in the family Diplodactylidae. The species is endemic to Australia.
Sphaerodactylus savagei, also known commonly as the Altagracia speckled sphaero or Savage's least gecko, is a small species of lizard in the family Sphaerodactylidae. The species is endemic to the Dominican Republic.
Pituophis deppei, commonly known as the Mexican bullsnake and the Mexican pine snake, is a species of nonvenomous colubrid snake endemic to Mexico. There are two recognized subspecies.
Rena boettgeri, also known commonly as the Baja California Cape wormsnake and the Cerralvo Island threadsnake, is a species of snake in the family Leptotyphlopidae. The species is endemic to Baja California, Mexico.
Salvadora bairdi, also known commonly as Baird's patchnose snake and la culebra chata de Baird in Mexican Spanish, is a species of snake in the subfamily Colubrinae of the family Colubridae. The species is native to central Mexico.
Sonora straminea, the variable sand snake or banded sand snake, is a species of snake of the family Colubridae.
