Non-Venomous Snakes
Black-Headed, Crowned, and Flat-Headed Snakes
- Mexican Black-Headed Snake
- Southeastern Crown Snake
- Trans-Pecos Black-Headed Snake
- Flat-Headed Snake
- Smith's Black-Headed Snake
- Plains Black-Headed Snake
- Rim Rock Crowned Snake
- Western Black-Headed Snake
- Florida Crowned Snake
- Central Florida Crowned Snake
- Coastal Dunes Crowned Snake
- Peninsula Crowned Snake
- Chihuahuan Black-Headed Snake
- Yaqui Black-Headed Snake
Black-Striped Snakes
- Regal Black-Striped Snake
- Tamaulipan Black-Striped Snake
Boas
- Northern Rubber Boa
- Southern Rubber Boa
- Northern Tree-Lined Boa
- Rosy Boa
Bull Snakes, Gopher Snakes, and Pine Snakes
- Gopher Snake
- Sonoran Gopher Snake
- San Diego Gopher Snake
- Pacific Gopher Snake
- Great Basin Gopher Snake
- Santa Cruz Island Gopher Snake
- Bullsnake
- Eastern Pine Snake
- Black Pine Snake
- Northern Pine Snake
- Florida Pine Snake
- Louisiana Pine Snake
Cat-Eyed Snakes
- Northern Cat-Eyed Snake
Crayfish Snakes
- Graham's Crayfish Snake
- Queensnake
Earthsnakes
- Rough Earthsnake
- Smooth Earthsnake
- Western Smooth Earthsnake
- Mountain Earthsnake
- Eastern Smooth Earthsnake
Gartersnakes
- Aquatic Gartersnake
- Santa Cruz Gartersnake
- Oregon Gartersnake
- Diablo Range Gartersnake
- Short-Headed Gartersnake
- Butler's Gartersnake
- Sierra Gartersnake
- Black-Necked Gartersnake
- Western Black-Necked Gartersnake
- Eastern Black-Necked Gartersnake
- Terrestrial Gartersnake
- Mountain Gartersnake
- Coast Gartersnake
- Wandering Gartersnake
- Mexican Gartersnake
- Brown Gartersnake
- Giant Gartersnake
- Two-Striped Gartersnake
- Checkered Gartersnake
- Marcy's Checkered Gartersnake
- Northwestern Gartersnake
- Western Ribbon Snake
- Arid Land Ribbon Snake
- Gulf Coast Ribbon Snake
- Orange-Striped Ribbon Snake
- Red-Striped Ribbon Snake
- Pains Gartersnake
Glossy Snakes
- Glossy Snake
- Texas Glossy Snake
- Mohave Glossy Snake
- Desert Glossy Snake
- Kansas Glossy Snake
- Arizona Glossy Snake
- California Glossy Snake
- Painted Desert Glossy Snake
Greensnakes
- Rough Green Snake
- Northern Rough Green Snake
- Florida Rough Green Snake
- Smooth Green Snake
Groundsnakes
- Western Groundsnake
- Variable Groundsnake
- Southern Texas Groundsnake
- Dekay's Brownsnake
- Northern Brownsnake
- Marsh Brownsnake
- Texas Brownsnake
- Midland Brown Snake
- Red-Bellied Snake
- Florida Red-Bellied Snake
- Northern Red-Bellied Snake
- Black Hills Red-Bellied Snake
- Florida Brownsnake
Hognose Snakes
- Dusty Hognose snake
- Mexican Hognose Snake
- Plains Hognose Snake
- Eastern Hognose Snake
- Southern Hognose Snake
Hooknose Snakes
- Tamaulipan Hooknose Snake
- Chihuahuan Hooknose Snake
- Thornscrub Hooknose Snake
Indigo Snakes
- Eastern Indigo Snake
- Central American Indigo Snake
- Texas Indigo Snake
Kingsnakes
- Gray-Banded Kingsnake
- Mexican Milksnake
- California Kingsnake
- Yellow-Bellied Kingsnake
- Prairie Kingsnake
- Southern Florida Mole Snake
- Northern Mole Snake
- Scarlet Kingsnake
- Short-Tailed Kingsnake
- Western Milksnake
- Eastern Kingsnake
- Speckled Kingsnake
- Madrean Mountain Kingsnake
- Coast Mountain Kingsnake
- Eastern Black Kingsnake
- Arizona Mountain Kingsnake
- Desert Kingsnake
- Eastern Milksnake
- California Mountain Kingsnake
Kirtland's Snakes
- Kirtland's Snake
Leaf-Nosed Snakes
- Saddle Leaf-Nosed Snake
- Spotted Leaf-Nosed Snake
Lined Snakes
- Lined Snake
Littersnakes
- Pine Woods Littersnake
Long-Nosed Snakes
- Long-Nosed Snake
Lyresnakes
- Sonoran Lyresnake
- California Lyresnake
- Texas Lyresnake
Mud & Rainbow Snakes
- Red-Bellied Mud Snake
- Eastern Mud Snake
- Western Mud Snake
- Rainbow Snake
- Common Rainbow Snake
- Southern Florida Rainbow Snake
Night Snakes
- Desert Nightsnake
- Sonoran Nightsnake
- Northern Desert Nightsnake
- Mesa Verde Nightsnake
- Chihuahuan Night Snake
- Texas Nightsnake
- Coast Night Snake
- San Diego Nightsnake
- California Nightsnake
Patch-Nosed Snakes
- Eastern Patch-Nosed Snake
- Mountain Patch-Nosed Snake
- Texas Patch-Nosed Snake
- Western Patch-Nosed Snake
- Big Bend Patch-Nosed Snake
- Desert Patch-Nosed Snake
- Mohave Patch-Nosed Snake
- Coast Patch-Nosed Snake
Racers, Coachwhips, and Whipsnakes
- Sonoran Whipsnake
- Northern American Racer
- Buttermilk Racer
- Northern Black Racer
- Tan Racer
- Eastern Yellow-Bellied Racer
- Blue Racer
- Brown-Chinned Racer
- Black-Masked Racer
- Western Yellow-Bellied Racer
- Mexican Racer
- Everglades Racer
- Southern Black Racer
- Coachwhip
- Sonoran Coachwhip
- Eastern Coachwhip
- Lined Coachwhip
- Red Racer
- San Joaquin Coachwhip
- Western Coachwhip
- Baja California Coachwhip
- Striped Racer
- Alameda Striped Racer
- California Striped Racer
- Schott's Whipsnake
- Rutheven's Whipsnake
- Schott's Striped Whipsnake
- Striped Whipsnake
- Central Texas Whipsnake
- Desert Striped Whipsnake
Ratsnakes
- Baja California Ratsnake
- Trans-Pecos Ratsnake
- Northern Trans-Pecos Ratsnake
- Eastern Ratsnake
- Baird's Ratsnake
- Great Plains Ratsnake
- Red Cornsnake
- Western Ratsnake
- Western Foxsnake
- Slowinski's Cornsnake
- Gray Ratsnake
- Eastern Foxsnake
- Green Ratsnake
- Northern Green Ratsnake
Ring-Necked Snakes
- Ringneck Snake
- Key Ringneck Snake
- Pacific Ringneck Snake
- Prairie Ringneck Snake
- Northern Ringneck Snake
- San Bernardino Ringneck Snake
- Coral-Bellied Ringneck Snake
- Southern Ringneck Snake
- Regal Ringneck Snake
- San Diego Ringneck Snake
- Mississippi Ringneck Snake
- Monterey Ringneck Snake
Sandsnakes
- Variable Sandsnake
Scarlet Snakes
- Scarlet Snake
- Florida Scarlet Snake
- Northern Scarlet Snake
- Texas Scarlet Snake
Sharp-Tailed Snakes
- Forest Sharp-Tailed Snake
- Common Sharp-Tailed Snake
Shovel-Nosed Snakes
- Western Shovelnose Snake
- Colorado Desert Shovelnose Snake
- Tucson Shovelnose Snake
- Mohave Shovelnose Snake
- Nevada Shovelnose Snake
- Sonoran Shovelnose Snake
- Organ Pipe Shovelnose Snake
Swamp Snakes
- Striped Swamp Snake
- Black Swamp Snake
- Southern Florida Swamp Snake
- Carolina Swamp Snake
- Northern Florida Swamp Snake
- Glossy Swamp Snake
- Delta Swamp Snake
- Eastern Glossy Swamp Snake
- Gulf Swamp Snake
Threadsnakes
- New Mexico Threadsnake
- Texas Threadsnake
- Plains Threadsnake
- South Texas Threadsnake
- Western Threadsnake
- Desert Threadsnake
- Southwestern Threadsnake
- Trans-Pecos Threadsnake
- Utah Threadsnake
Vinesnakes
- Brown Vinesnake
Watersnakes
- Saltmarsh Snake
- Gulf Saltmarsh Snake
- Mangrove Saltmarsh Snake
- Atlantic Saltmarsh Snake
- Mississippi Green Watersnake
- Plain-Bellied Watersnake
- Southern Watersnake
- Broad-Banded Watersnake
- Banded Watersnake
- Florida Watersnake
- Florida Green Watersnake
- Brazos River Watersnake
- Concho Watersnake
- Diamondback Watersnake
- Common Watersnake
- Lake Erie Watersnake
- Midland Watersnake
- Northern Watersnake
- Carolina Watersnake
- Brown Watersnake
Worm Snakes
- Common Wormsnake
- Eastern Wormsnake
- Midwestern Wormsnake
- Western Wormsnake
Alien Species
- Javanese File Snake
- Boa Constrictor
- Burmese Python
- Northern African Rock Python
- Brahminy Blind Snake
Venomous Snakes
Coral Snakes
- Sonoran Coral Snake
- Arizona Coral Snake
- Eastern Coral Snake
- Texas Coral Snake
- Texas Gulf Coast Coral Snake
Moccasins
- Copperhead
- Southern Copperhead
- Broad-Banded Copperhead
- Northern Copperhead
- Osage Copperhead
- Trans-Pecos Copperhead
- Cottonmouth
- Florida Cottonmouth
- Western Cottonmouth
- Eastern Cottonmouth
Rattlesnakes
- Eastern Diamondback Rattlesnake
- Western Diamondback Rattlesnake
- Sidewinder
- Mohave Desert Sidewinder
- Sonoran Sidewinder
- Colorado Desert Sidewinder
- Arizona Black Rattlesnake
- Timber Rattlesnake
- Rock Rattlesnake
- Banded Rock Rattlesnake
- Mottled Rock Rattlesnake
- Speckled Rattlesnake
- Southwestern Speckled Rattlesnake
- Western Black-Tailed Rattlesnake
- Western Rattlesnake
- Grand Canyon Rattlesnake
- Midget Faded Rattlesnake
- Southern Pacific Rattlesnake
- Great Basin Rattlesnake
- Northern Pacific Rattlesnake
- Eastern Black-Tailed Rattlesnake
- Twin-Spotted Rattlesnake
- Western Twin-Spotted Rattlesnake
- Red Diamondback Rattlesnake
- Mohave Rattlesnake
- Northern Mohave Rattlesnake
- Panamint Rattlesnake
- Tiger Rattlesnake
- Prairie Rattlesnake
- Ridge-Nosed Rattlesnake
- New Mexico Ridge-Nosed Rattlesnake
- Arizona Ridge-Nosed Rattlesnake
- Massasauga
- Pygmy Rattlesnake
- Dusky Pygmy Rattlesnake
- Carolina Pygmy Rattlesnake
- Western Pygmy Rattlesnake
- Western Massasauga
- Desert Massasauga
- Prairie Massasauga
Sea Snakes
- Yellow-Bellied Sea Snake
