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Reptile and Amphibian Species Lists

The following tables should not be considered a definitive list of the vertebrate species occurring on the INL. Although all of the abundant and common species should be included, some of the less commonly occurring species may have been missed. Not all habitats on the INL have been surveyed with the same intensity. Therefore, the number of vertebrate species observed on the INL is likely to increase as field efforts in some of the lesser studied habitats intensify.

Definition of terms used for seasonal used categories are:

  • Resident - occurs on the INL through the year
  • Migrant - occurs on the INL only during migration
  • Summer - occurs on the INL during summer
  • Winter - occurs on the INL during winter

Definition of terms used for abundance on the INL are:

  • Abundant - very numerous and certain to be seen or sampled
  • Common - likely to be observed or sampled
  • Uncommon - occurs in limited numbers and is not likely to be observed or sampled
  • Local - a species that is not always present or is restricted in distribution
  • Rare - a species that has the INL as part of its range, but occurs very infrequently
  • Accidental - a species that is not expected to be found in the INL area, but has been recorded

Vertebrates were classified according to the following habitats:

  • Aquatic - on or near water
  • Juniper foothills
  • Riparian zones
  • Sagebrush/grassland
  • Sitewide
  • Irrigated lawns near facilities
  • Agricultural areas
Species Species Distribution Species Seasonal Occurrence Species Abundance1 Species Remarks
Family Pelobatidae
Great Basin Spadefoot Toad
(Spea intermontana)
Sitewide associated with riparian and equatic environments Resident Common Restricted by water availability
Family Iguanidae
Leopard Lizard
(Gamebia wislinzenii)
Sagebrush Grasslands Resident Uncommon  
Short-horned Lizard
(Phrynosoma douglassi)
Sagebrush Grasslands Resident Common  
Sagebrush Lizard
(Sceloporus graciosus)
Sagebrush Grasslands Resident Common  
Family Scincidae
Western Skink
(Eumeces skiltonianus)
Sitewide Resident Rare  
Family Boidae
Rubber Boa
(Charina bottae)
Sitewide Resident Rare  
Family Colubridae
Desert Striped Whipsnake
(Masticophis taeniatus)
Sitewide Resident Uncommon  
Gopher Snake
(Pituophis catenifer)
Sitewide Resident Common  
Western Terrestrial Gopher Snake
(Thamnophis elegans)
Sitewide Resident Uncommon  
Family Viperidae
Western Rattlesnake
(Crotalus viridis)
Sitewide Resident Common  


Family Ambystomidae
Tiger Salamander
(Ambystoma tigrinum)
Sitewide associated with riperian and aquatic environments  
Family Hylidae
Striped Chorus Frog
(Pseudacris triseriata)
Family Ranidae
Northern Leopard Frog
(Rana pipiens)
Family Bufonidae
Western Toad
(Bufo boreas)
Agricultural, Aquatic, Riperian  
Family Iguanidae
Mojave Black-collared Lizard
(Crotaphytus bicinctores)
Sitewide Sehman and Linder (1978) suggested this species may occur
Family Colubridae
(Coluber constrictor)
Ringneck Snake
(Diadophis punctatus)
Night Snake
(Hypsiglena torquata)
Common Garter Snake
(Thamnophis sirtalis)
1Yearlong residents, even though they are only observed in spring, summer and early fall.
2 Ranges overlap the INL; however, there are no documented observations./td>

©2020 ESER Program.