vulnerablereptileSouthern California, USA
Coast Horned Lizard
A California endemic in decline — a textbook trophic cascade caused by invasive ants.
Reptiles
Select a Category
vulnerablereptile
vulnerablereptileMojave Desert, USA
Desert Tortoise
The Mojave's flagship reptile — threatened by habitat loss and disease.
endangeredreptilePacific Ocean & California Coast
Leatherback Sea Turtle
The largest turtle on Earth — a Pacific migrant bridging reptile and ocean conservation.
vulnerablereptileCalifornia & Pacific Northwest, USA
Western Pond Turtle
California's only native freshwater turtle — connecting reptile conservation to watershed health.
vulnerablereptileSonoran & Mojave Deserts, USA
Gila Monster
One of only a few venomous lizards in the world — slow-reproducing and habitat-sensitive.
thrivingreptileNorth America (widespread)
Common Garter Snake
The gateway reptile — harmless, widespread, and a perfect first One Simple Thing.
endangeredreptileSan Francisco Peninsula, California
San Francisco Garter Snake
Often called the most beautiful snake in North America — federally endangered.
endangeredreptileSan Joaquin Valley, California
Blunt-nosed Leopard Lizard
A federally endangered lizard of the San Joaquin Valley — a symbol of California grassland loss.
thrivingreptileSoutheastern USA
American Alligator
Removed from the endangered list after near-extinction — proof that protection works.
vulnerablereptileEastern North America
Eastern Box Turtle
A familiar backyard turtle in steep long-term decline — a gentle introduction to reptile conservation.
vulnerablereptileSouthern California, USA
Northern Red Diamond Rattlesnake
A striking Southern California native — an ambassador for respecting, not fearing, venomous wildlife.
thrivingreptileMojave & Sonoran Deserts, USA
Western Chuckwalla
A large, harmless desert lizard that inflates to hide in rock crevices — a Death Valley favorite.
Intention Founder
Is your One Simple Thing not listed here?
Suggest a real amphibian, bird, ecosystem, insect, issue, mammal, plant, reptile, sealife, or watershed for the catalogue. If it passes review, you become its Intention Founder — the first person in the community to champion it.