NORTHWESTERN GARTER SNAKE
Thamnophis ordinoides
DESCRIPTION
Also called the Western Garter Snake, the Northwestern Garter Snake (Thamnophis ordinoides) is a slender, medium-sized snake characterized by its distinctive longitudinal stripes that can vary in color from yellow to white against a dark background. This species is primarily found in moist habitats, such as grasslands, wetlands, and near water bodies, where it exhibits a semi-aquatic lifestyle. Northwestern Garter Snakes are known for their quick movements and are often seen basking in the sun or hiding among vegetation, making them adept at both hunting and evading predators.
FUN FACTS
- Northwestern Garter Snakes are known for their ability to tolerate low levels of toxins found in some of their prey, such as newts, which can be toxic to other animals
- This adaptation allows them to exploit a niche that many other predators cannot
- | These snakes are also capable of swimming and are often found near water, where they hunt for fish and amphibians
- Their semi-aquatic nature makes them unique among many terrestrial snake species
QUICK INFO
Lifespan5-10 years in the wild, up to 15 years in captivit
Average Weight50-150 g
Average Length0.6-1.2 m
Diet TypeCarnivore
Social Structuresolitary
Activity PatternDiurnal
Breeding SeasonSpring (April-June)
- Habitat
- These snakes thrive in a variety of moist environments, including grasslands, wetlands, and areas near streams or ponds. They prefer habitats that provide ample cover and access to water.
- Biomes
- Temperate Forest, Wetland, Grassland
- Native Range
- The Northwestern Garter Snake is native to the western United States and parts of Canada, particularly in regions with abundant water sources.
- Continent
- North America
- Countries
- United States, Canada
- Diet
- Northwestern Garter Snakes primarily feed on small amphibians, fish, and invertebrates. They are known to hunt actively, using their keen sense of smell to locate prey.
- Diet Type
- Carnivore
- Favorite Food
- amphibians, fish
- Social Structure
- solitary
- Activity Pattern
- Diurnal
- Group Size
- 1-5
- Territorial
- 0
VU
50-150 g
Weight
0.6-1.2 m
Length
- Coloration
- Typically features a dark body with lighter stripes running along the length of its body.
- Sexual Dimorphism
- Males are generally smaller and have longer tails compared to females.
- Lifespan
- 5-10 years in the wild, up to 15 years in captivit
- Offspring per Birth
- 5-30
- Sexual Maturity
- 2-3 years
- Breeding Season
- Spring (April-June)
LC
Least Concern
IUCN Red List Status
- Population Status
- The population of Northwestern Garter Snakes is considered stable in many areas, although local declines may occur due to habitat loss.
- Wild Population Estimate
- Unknown
- Population Trend
- Stable
- Endangered
- 0
- Threats
- Main threats include habitat destruction due to urban development and agriculture, as well as pollution of water sources. These factors can lead to localized declines in populations.
- Predators
- Birds of prey, larger snakes, and mammals such as raccoons and foxes are known predators of the Northwestern Garter Snake.
- Defense Mechanisms
- When threatened, Northwestern Garter Snakes may release a foul-smelling musk to deter predators and can also exhibit rapid movements to escape.
- Found in Zoos
- Uncommon