of Eaton Canyon

The Animals of Eaton Canyon

Remember when visiting Eaton Canyon or any other natural area, take your camera or binoculars with you into the canyon, but please LOOK ONLY – touching or even trying to touch the wildlife can stress them and cause illness or death, upsetting the balance of nature.

We have divided our local wildlife into six major categories. The first is the invertebrates, whose numbers far exceed all the others combined. The last five – fish, amphibians, reptiles, birds, and mammals – are vertebrates and are listed in the order in which it is believed that they evolved. Just click on a name to find photos and information about the animals in that group.

Invertebrates by Phylum:

Porifera (Sponges)
Cnidaria (Jellyfish, Coral, Sea Anemones, etc.)
Platyhelmintha (Flatworms)
Nematoda (Roundworms)
Mollusca (Snails, Clams, Mussels, Squids, Octopi, etc.) Not all are present in Eaton Canyon.
Annelida (Segmented Worms)
Arthropoda (Insects, Arachnids, Crustaceans, etc.)
Echinoderma (Sea Urchins, Starfish, etc.)


Characteristics of Fish
There are no naturally occurring fish in Eaton Canyon. However, the pond near the Nature Center is stocked with mosquito fish to eliminate mosquitoes from breeding.


Characteristics of amphibians

Black-Bellied Slender Salamander (Batrachoseps nigriventris)

Monterey Salamander
(Ensatina eschscholzii eschscholzii)

California Newt
(Taricha torosa)
Western Toad
(Anaxyrus boreas boreas)
California Treefrog
(Pseudacris cadaverina)


Western Whiptail Lizard
(Cnemidophorus tigris)
Southern Alligator Lizard
(Elgaria multicarinatus)
California King Snake
(Lampropeltis getulus)
Striped Racer
(Masticophis lateralis)

Gopher Snake
(Pituophis catenifer)
Two-striped Garter Snake
(Thamnophis hammondii)
Pacific Rattlesnake
(Crotalus viridis)



Characteristics of mammals

Virginia Opossum (Didelphis virginiana)
Western Pipistrelle (aka “Canyon bat”) (Pipistrellus hesperus)
Big Brown Bat (Eptesicus fuscus)
Audubon’s Cottontail (Sylvilagus audubonii)
California Ground Squirrel (Otospermophilus beecheyi)
Western Gray Squirrel (Sciurus griseus)
Fox Squirrel (Sciurus niger) – Introduced species.
Merriam’s Chipmunk (Neotamias merriami)
Botta’s Pocket Gopher (Thomomys bottae)

California Pocket Mouse (Perognathus californicus)
Agile Kangaroo Rat (Dipodomys agilis)
Dusky-footed Woodrat (Neotoma fuscipes)
Coyote (Canis latrans)
Gray Fox (Urocyon cinereoargenteus)
Raccoon (Procyon lotor)
Ringtail (Bassariscus astutus)
Striped Skunk (Mephitis mephitis)
Long-tailed Weasel (Mustela frenata)
Bobcat (Felis rufus)
Mountain Lion (Puma concolor)
Mule Deer (Odocoileus hemionus)