VENOMOUS SNAKES

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NON-VENOMOUS SNAKES

RATTLESNAKE LOOK ALIKES
RATTLESNAKE ID
Rattlesnakes vary in size, markings and temperament depending on the individual and locality of the rattlesnake. Below are a couple basic guidelines to follow when distinguishing a rattlesnake from a non venomous snake.

Head Shape – Broad and triangular

Tail – Has a rattle (not always present) that makes a distinct sound and is blunt shaped. It is usually rounded at the end with a button like appearance. Rattlesnakes may not have the ability to rattle if they have lost their rattle, if they are a neonate or if their rattle is wet. Do not rely on a rattle for determining whether or not a snake is venomous.

Eyes – Vertical with elliptical pupils

Body – Heavy or wide looking in appearance

Pattern – Often a diamond pattern is present, but not always

Color – Dependent upon species and locality

Scales – Keeled and large

VENOMOUS SNAKES
Below is a reference chart of the 10 rattlesnake species that are native to California, all of which are venomous. If you have encountered a rattlesnake on your property and would like to determine the species of rattlesnake you saw, use this chart as an identification tool. The species of rattlesnakes you encounter will depend on where you reside.
Colorado Desert Sidewinder
(Crotalus cerastes lateropens)
Great Basin Rattlesnake
(Crotalus origanislutosus)
Mohave Desert Sidewinder
(Crotalus cerastes cerastes)
Northern Mohave Rattlesnake
(Crotalus scutulatus scutalatus)
Northern Pacific Rattlesnake
(Crotalus oreganus oreganus)
Panamint Rattlesnake
(Crotalus stephensi stephensi)
Red Diamond Rattlesnake
(Crotalus ruber)
Southern Pacific Rattlesnake
(crotalus oreganus helleri)
Southwestern Speckled Rattlesnake
(Crotalus mitchellii pyrrhus)
Western Diamond-backed Rattlesnake
(Crotalus atrox)
All species of rattlesnakes vary significantly in size, territory, markings and temperament depending on their locality, and may vary from the pictures below. If you do not see a snake that resembles what you have encountered it may be a non native snake that has been released by its previous owner. Get the best description of the snakes you encounter and pictures if possible.

For additional pictures of rattlesnakes native to California
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NON-VENOMOUS SNAKES
Below is a reference chart of the more common non venomous snakes native to Southern California. If you have encountered a snake on your property and would like to determine the species of snake you saw, use this chart as an identification tool.
Coastal Rosy Boa
California King Snake
California King Snake
California King Snake
California King Snake
Mountian King Snake
Red Coachwhip
Two-striped Garter
Baja California Lyresnake
Coast Patch-nosed Snake
Desert Glossy Snake
Shovel-nosed Snake
Pacific Gopher Snake
Pacific Ring-necked Snake
San Diego Gopher Snake
San Diego Night Snake
Western Black-headed Snake
Western Blind Snake
RATTLESNAKE LOOK ALIKES
The pictures below are of non venomous snakes native to California. Often times non venomous snakes are mistaken for venomous snakes. This is because many non venomous snakes resemble venomous snakes in color and pattern. Non venomous snakes often mimic rattlesnakes as a defense mechanism to deter predators. Snakes do this by rattling their tails(Tails come to a point and lack the noise a rattlesnake makes), hissing and flatting their heads out, making them look triangular.
Baja California Lyresnake
California Night Snake
Desert Glossy Snake
Pacific Gopher Snake
San Diego Gopher Snake
Two-striped Garter
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