Ecoregion
Southern California Mountains Reptiles and Amphibians by Month
Chaparral climbs into pine forest in these mountains. Western Fence Lizards and Southern Sagebrush Lizards are common. Blainville's Horned Lizards live in open sandy spots. June is the busiest month. The Western Rattlesnake, Southwestern Speckled Rattlesnake and Red Diamond Rattlesnake all live here.
34 species3 venomous
Peak and shoulder ratings are rough guidance, not a schedule. Weather, elevation and the year can shift any species by weeks.
Rare and protected species are left off on purpose. Look, don't take, and never handle a venomous snake.
Species out in Southern California Mountains, by group and month
| Group | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snakes | 1 | 5 | 12 | 14 | 14 | 14 | 14 | 10 | 11 | 7 | 3 | 1 |
| Lizards | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 8 | 8 | 8 | 5 | 2 |
| Turtles | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Frogs and Toads | 3 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 3 | 3 |
| Salamanders | 4 | 4 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 4 | 4 |
Numbers = species active that month (at peak or just starting / winding down).
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26 species at peak or shoulder in September
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shoulderAbout Southern California Mountains
When are reptiles and amphibians most active in the Southern California Mountains?
June is the busiest month in the Southern California Mountains, with 30 species at peak activity. At least half of the area's species are active from February through October.
What reptiles and amphibians live in the Southern California Mountains?
34 species have enough iNaturalist records to show here: 14 snakes, 10 lizards, 5 frogs and toads, 4 salamanders, and 1 turtle. The most-reported are the Western Fence Lizard, Common Side-blotched Lizard, and Southern Sagebrush Lizard.
Are there venomous snakes in the Southern California Mountains?
Yes. The Western Rattlesnake, Southwestern Speckled Rattlesnake, and Red Diamond Rattlesnake live here. Don't handle them.
Which reptiles and amphibians in the Southern California Mountains are introduced?
The American Bullfrog and Pond Slider are not native here.
Where does this data come from?
Activity calendars are built from iNaturalist research-grade observations (downloaded through GBIF, September 2026), corrected for how many people are out observing each month. Rare and protected species are left off on purpose.