California’s Poisonous Snakes

There are no snakes in Alaska, but California makes up for it! There are 46 different kinds of snakes that live in California, and 7 of them are poisonous. What kind of poisonous snakes live in California? Where are all of these poisonous snakes? Are they located in every county in California? How many people get bitten by poisonous snakes in the state? Let’s find out all about California’s poisonous snakes.

What kinds of snakes are poisonous in California?

All of the poisonous snakes in California are a kind of rattlesnake.

All 7 poisonous snakes in California are rattlesnakes. They all have a triangle head, vertical slits for eyes (like cat eyes), and a rattle at the end of their tail to warn predators (and humans). Their fangs produce toxic venom, so they are technically venomous, but are frequently referred to as poisonous due to the harmful effects of their venom. Here are the seven snakes in California to be aware of.

1) Western Rattlesnake

The Western rattlesnake is one of the few rattlesnakes you can find throughout the state.

The Western rattlesnake is the most common rattlesnake in California. It can be found throughout the state. It is 4-6 feet long and is a heavy-bodied snake. Western rattlesnakes are tan with dark brown markings and the typical triangular head. Their venom is more potent than most rattlesnakes, but they are not overly aggressive.

2) Western Diamondback Rattlesnake

They can deliver more venom with their large fangs and are one of the most poisonous snakes in California.

Similar to the Western rattlesnake, the Western diamondback has a diamond design along the length of its body. It delivers one of the most potent bites because it can deliver more venom with its large fangs in one bite. It is not found throughout the state, so you only need to be aware in the drier Southeastern California, around San Diego and the southern border with Mexico, and the eastern border with Arizona. At 4-5 feet long and a heavy-bodied snake, they are easy to identify.

3) Red Diamond Rattlesnake

Red Diamond rattlesnakes have a reddish-brown color and a black and white striped tail.

The Red Diamond rattlesnakes can only be found in the far southwest corner of California, not throughout the state. They have unique coloration and markings. They look similar to the Western diamondback, but the diamond shapes have a reddish-brown tint. The most unique thing about these snakes is the last few inches of their tail, before the rattle, has zebra-like black and white stripes. Most are 2-4.5 feet long and are poisonous, so be careful if you see the black and white stripes!

4) Southwestern Speckled Rattlesnake

The Southwestern speckled rattlesnake has two “pits” on the side of its head for sensing prey.

These medium-sized snakes are located in the Southwestern part of the United States but the southeastern part of California (they are also in Nevada). The Southwestern Speckled rattlesnake gets its name from the speckled appearance of browns, blacks, and tan speckled banding. It can be 2-3.5 feet long and is a heavy-bodied snake. Like other rattlesnakes, it gives fair warning to predators or humans and will coil, use its rattle and rise showing its fangs as a warning before striking. It is poisonous so keep your distance from it.

5) Mojave Rattlesnake

The Mojave rattlesnakes are typically 2-4 feet long and are large-bodied snakes.

The Mojave rattlesnakes looks similar to the Western diamondbacks but have the black and white stripes by the tail like the red diamond rattlesnakes. They are typically 2-4 feet long and large-bodied snakes. In California, they are only in the Mojave Desert in the south eastern part of the state. Since there are fewer people that live in and/or visit the desert, there are fewer human-Mojave conflicts.

6) Panamint Rattlesnake

The Panamint rattlesnake lives in the mountains in south east California.

Panamint rattlers are pretty much the same coloration from head to tail but can have some variations. They are typically brown, yellowish, or tan with lighter markings. In California, they prefer the rocky mountainous habitats, living in the south eastern part of the state. They grow to be 2-4.5 feet long and are venomous, but bites are rare. Panamint City is an old town that is a ghost town now in the Panamint Mountains of Death Valley.

7) Sidewinder

Sidewinders move through the sand in an S-motion and can slither up to 18 mph.

The Sidewinder is fascinating to watch! It slithers from side to side in an S-motion to move from place to place, and it can move fast. Its unique propulsion can get up to 18 miles per hour. If onewouldn’t chase you, you wouldn’t be able to outrun it, but Sidewinders are not aggressive and do not chase people. They are a bit smaller, around 2-2.5 feet, and although they are poisonous, their bites only deliver a small amount of venom. In California, you will only find them in the Sonoran desert in the southern part of the state.

Where do most poisonous snake bites occur in California?

Most snake bites in California occur in Southern California. If you mapped out the locations of the snakes on our list, you would see that most are in the southern part of the state.

When do most poisonous snake bites occur in California?

Most snake bites occur between April – October, when snakes are more likely to come out and sun themselves in the warmer weather.

Do a lot of people get bitten by snakes in California?

With proper medical treatment, including antivenin, bites are usually not serious.

The California Poison Control System reports an average of 300 cases in a year, with more incidents being reported by emergency rooms and medical facilities. In the US, there is an average of 7,000-8,000 venomous snake bites per year.

As you saw on our list, most of the rattlesnakes live in remote areas like deserts and mountains, so the number of human/rattlesnake encounters is relatively small. An article in the Natural History Museum of Los Angeles stated that our fear of being bitten by snakes is misplaced when we look at the statistics. North Carolina actually has the highest snake-bite rate in the country.

How can you prevent being bit by a poisonous snake?

Here are a few tips to keep safe if you are in an area that has poisonous snakes:

1. Wear boots and long pants.

2. Stay on marked trails.

3. If you come across a snake, do not handle it. Walk away slowly.

4. Don’t hike alone, mdon’toise so that you donDon’tartle a snake.

5. Don’t pick up rocks, logs, or firewood without looking for snakes first, remember they can be camouflaged.

6. Teach children to leave snakes alone and not to pick them up.

What should you do if you get bit by a snake?

If you get bit by a snake, you should seek immediate medical attention. You may not know what kind of snake it was, and it is safest to get help. Do not try to catch the snake to help identify it. Just leave the area and find the closest medical facility. In the US, we are lucky to have trained professionals and antivenom that help keep the fatality rate from snake bites very low. According to the CDC, of the 7,000-8,000 venomous snake bites in the US, only an average of 5 are fatal.

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