Yes, there are snakes in Seattle, though encounters are relatively uncommon and most are non-venomous. The region’s mild climate supports several snake species. These reptiles contribute to the local ecosystem, often helping to control rodent and slug populations.
Native Snake Species in the Seattle Area
The most frequently encountered native snake species in Seattle are garter snakes, including the Common Garter Snake (Thamnophis sirtalis), Western Terrestrial Garter Snake (Thamnophis elegans), and Northwestern Garter Snake (Thamnophis ordinoides). These slender snakes vary in coloration, often displaying stripes of yellow, red, or turquoise along their bodies, with some having a darker background. Garter snakes are active during the day and primarily feed on amphibians, slugs, earthworms, and small fish.
Another native species is the Northern Rubber Boa (Charina bottae). These small, stout snakes have smooth, rubbery skin, typically in shades of brown or olive, with a blunt tail that resembles their head. Northern Rubber Boas are nocturnal and primarily prey on young, underground-nesting mammals like voles and mice, but also consume lizard and snake eggs. They are docile, often coiling into a ball or releasing a musky scent when threatened rather than biting. Other species, such as the Northwestern Gopher Snake (Pituophis catenifer) and Sharp-tailed Snake (Contia tenuis), are also found in the area, though less commonly.
Where Snakes Reside
Snakes in Seattle inhabit a variety of environments. They are frequently found in greenbelts, parks, and natural areas that provide ample cover and food sources. Moist habitats with tall grasses, such as marshes, ponds, and streams, are particularly attractive to garter snakes. You might also encounter them in gardens, where they find shelter under rocks, logs, and debris, and prey on slugs and insects.
Northern Rubber Boas prefer cooler, moist areas. They spend much of their time hidden under logs, rocks, leaf litter, or within rodent burrows, venturing out primarily at night. While snakes generally avoid human activity, they can occasionally find their way into residential yards or even homes, especially if attracted by rodent populations or seeking shelter. Maintaining a tidy yard and sealing entry points in foundations can help reduce the likelihood of such encounters.
Encountering Snakes
If you encounter a snake in Seattle, maintain a respectful distance and observe it without interference. Native snakes are not aggressive and will typically try to move away when they detect human presence. Do not attempt to handle, harm, or provoke the snake, as it may bite if it feels threatened. Allowing the snake to move away naturally is the safest approach.
While Washington state is not home to any venomous snake species, it is always wise to exercise caution. If a snake is found in an unusual or concerning location, such as inside your home, or if you are unable to identify it, consider contacting a professional wildlife removal service. Organizations like PAWS Wildlife Center also provide assistance for sick or injured wild animals, including snakes. These professionals can safely and humanely remove the snake and offer advice on preventing future encounters.