Field Guide/Reptiles/Eastern US and Canada

This Field Guide to Reptiles covers the portion of the United States and Canada east of the Rocky Mountains.

Alligators

Field Guide to Reptiles/American Alligator

Lizards

Alligator Lizards

Gerrhonotus infernalis (Texas Alligator Lizard)

Where found: The Texas Alligator Lizard is found in the central region of Texas, and south into Mexico. Description: The Texas alligator lizard is a medium sized lizard, attaining a maximum length of approximately 20 inches. They have a flat, wedge-shaped head. They are generally a yellow-brown color, often with darker brown and white checker patterning on the dorsal surface, and uniformly light colored, white or grey on the ventral surface. Their scales are very stiff and plate-like. They have short limbs, and a tail that can fall off to distract a potential predator, which will regrow in time. Behavior: Texas alligator lizards are relatively slow moving, diurnal lizards, with good vision. They are often found in on rocky hillsides, where they hide amongst the stones or in limestone crevices. Their primary diet is insects and other invertebrates. Not generally aggressive, but they may bite if handled. Reproduction: Breeding occurs year round, sometimes multiple clutches of eggs are laid per year. Females will often stay near the nesting site to protect it, but there is no parental care once the young alligator lizards hatch. The young are generally have more striking markings, and are only about 3-4 inches in length.

Anoles

Field Guide to Reptiles/Brown Anole

Field Guide to Reptiles/Green Anole

Collared Lizards

Field Guide to Reptiles/Eastern Collared Lizard

Field Guide to Reptiles/Reticulate Collared Lizard

Field Guide to Reptiles/Longnose Leopard Lizard

Geckos

Field Guide to Reptiles/Texas Banded Gecko

Field Guide to Reptiles/Reticulated Gecko

Field Guide to Reptiles/Rough-tailed Gecko

Field Guide to Reptiles/Mediterranean Gecko

Iguanas

Field Guide to Reptiles/Spinytail Iguana

Legless Lizards

Field Guide to Reptiles/Western Slender Glass Lizard

Spiny & Horned lizards

Field Guide to Reptiles/Greater Earless Lizard

Field Guide to Reptiles/Spot-tailed Earless Lizard

Field Guide to Reptiles/Southern Earless Lizard

Field Guide to Reptiles/Speckled Earless Lizard

Field Guide to Reptiles/Eastern Earless Lizard

Field Guide to Reptiles/Prairie Earless Lizard

Field Guide to Reptiles/Keeled Earless Lizard

Field Guide to Reptiles/Texas Horned Lizard

Field Guide to Reptiles/Short-horned Lizard

Field Guide to Reptiles/Roundtail Horned Lizard

Field Guide to Reptiles/Sagebrush Lizard

Field Guide to Reptiles/Mesquite Lizard

Field Guide to Reptiles/Twin-spotted Spiny Lizard

Field Guide to Reptiles/Big Bend Canyon Lizard

Field Guide to Reptiles/Presidio Canyon Lizard

Field Guide to Reptiles/Canyon Lizard

Field Guide to Reptiles/Texas Spiny Lizard

Field Guide to Reptiles/Crevice Spiny Lizard

Field Guide to Reptiles/Blue Spiny Lizard

Field Guide to Reptiles/Southern Prairie Lizard

Field Guide to Reptiles/Northern Prairie Lizard

Field Guide to Reptiles/Northern Fence Lizard

Field Guide to Reptiles/Rosebelly Lizard

Field Guide to Reptiles/Texas Tree Lizard

Field Guide to Reptiles/Big Bend Tree Lizard

Field Guide to Reptiles/Desert Side-blotched Lizard

Skinks

Field Guide to Reptiles/Southern Coal Skink

Field Guide to Reptiles/Five-lined Skink

Field Guide to Reptiles/Broadhead Skink

Field Guide to Reptiles/Variable Skink

Field Guide to Reptiles/Great Plains Skink

Field Guide to Reptiles/Northern Prairie Skink

Field Guide to Reptiles/Southern Prairie Skink

Field Guide to Reptiles/Short-lined Skink

Field Guide to Reptiles/Four-Lined Skink

Field Guide to Reptiles/Ground Skink

Whiptails

Field Guide to Reptiles/Gray Checkered Whiptail

Field Guide to Reptiles/Chihuahuan Spotted Whiptail

Field Guide to Reptiles/Texas Spotted Whiptail

Field Guide to Reptiles/Trans-Pecos Striped Whiptail

Field Guide to Reptiles/Laredo Striped Whiptail

Field Guide to Reptiles/Marbled Whiptail

Field Guide to Reptiles/New Mexico Whiptail

Field Guide to Reptiles/Plateau Spotted Whiptail

Field Guide to Reptiles/Eastern Six-lined Racerunner

Field Guide to Reptiles/Prairie Racerunner

Field Guide to Reptiles/Checkered Whiptail

Field Guide to Reptiles/Desert Grassland Whiptail

Snakes

Field Guide to Reptiles/Black Rat Snake

Field Guide to Reptiles/Brown Snake

Field Guide to Reptiles/Bull snake

Field Guide to Reptiles/Common Garter Snake

Field Guide to Reptiles/Copperhead Agkistrodon

Field Guide to Reptiles/Eastern Garter Snake

Field Guide to Reptiles/Eastern Hognose Snake

Field Guide to Reptiles/Eastern Racer

Field Guide to Reptiles/Eastern Rat Snake

Field Guide to Reptiles/Eastern Ribbon Snake

Field Guide to Reptiles/Eastern Worm Snake

Field Guide to Reptiles/Eastern Yellowbelly Racer

Field Guide to Reptiles/Fox Snake

Field Guide to Reptiles/Lined Snake

Field Guide to Reptiles/Massasauga

Field Guide to Reptiles/Milk Snake

Field Guide to Reptiles/Northern Water Snake

Field Guide to Reptiles/Plains Garter Snake

Field Guide to Reptiles/Red-bellied Snake

Field Guide to Reptiles/Ringneck Snake

Field Guide to Reptiles/Smooth Green Snake

Field Guide to Reptiles/Timber Rattlesnake

Field Guide to Reptiles/Western Hognose Snake

Turtles and Tortoises

Field Guide to Reptiles/Snapping Turtle

Field Guide to Reptiles/Blanding's Turtle

Field Guide to Reptiles/Spotted Turtle

Field Guide to Reptiles/Wood Turtle

Field Guide to Reptiles/Bog Turtle

Field Guide to Reptiles/Eastern Box Turtle

Field Guide to Reptiles/Red-eared Slider

Field Guide to Reptiles/Painted Turtle

Field Guide to Reptiles/Diamondback Terrapin

Field Guide to Reptiles/Northern Redbellied Cooter

Field Guide to Reptiles/Eastern Musk Turtle

Field Guide to Reptiles/Common Musk Turtle

Field Guide to Reptiles/Razorback Musk Turtle

Field Guide to Reptiles/Yellow Mud Turtle

Field Guide to Reptiles/Mexican Mud Turtle

Field Guide to Reptiles/Mississippi Mud Turtle

Field Guide to Reptiles/Loggerhead Sea Turtle

Field Guide to Reptiles/Kemp's Ridley

Field Guide to Reptiles/Atlantic Ridley Turtle

Field Guide to Reptiles/Green Sea Turtle

Field Guide to Reptiles/Hawksbill Sea Turtle

Field Guide to Reptiles/Leatherback Sea Turtle