A handful of fascinating amphibians live in the area. Streams and creeks support populations of Pacific tree frog, the small amphibian whose signature chorus adds an aura of mystery and inexplicable beauty to the surrounding land. Western toads often make their appearance at nightfall, emerging from burrows in search of water and insects, while California slender salamanders are often found under the cool leaf litter and canopy of oak woodlands. Many reptiles thrive in the Santa Susana range. Lizards that are likely to be observed on any given day include the common western fence lizard and the equally abundant side-blotched lizard. Somewhat less frequently observed but still present are the southern alligator lizard, western skink, whiptail, and the seemingly rare coast horned lizard. Southern Pacific rattlesnakes and gopher snakes are perhaps the most commonly observed snakes, but a lucky hiker might also encounter other species including the striped racer, California kingsnake, and ring-necked snake.