The California Red-Sided Garter Snake (Thamnophis sirtalis infernalis) is a captivating subspecies of the common garter snake, renowned for its vibrant coloration and striking pattern. Native to the central and northern parts of California, this snake is particularly notable for its vivid red or orange sides, which contrast sharply with its black dorsal stripes and light-colored underbelly. The red coloration is most pronounced along the sides of the body, giving the snake its distinctive appearance. This eye-catching coloration not only makes it a favorite among reptile enthusiasts but also plays a role in its defense strategy by confusing predators and signaling its potential toxicity.

In the wild, California Red-Sided Garter Snakes inhabit a range of environments including grasslands, open woodlands, and areas near water sources such as ponds and streams. They are semi-aquatic and can often be seen hunting for amphibians, fish, and insects in and around these aquatic habitats. Their diet and habitat preferences make them an important part of the local ecosystem, as they help control populations of their prey species. Despite their vibrant appearance, California Red-Sided Garter Snakes are generally docile and easy to handle, which contributes to their popularity in the pet trade. Their adaptability to both terrestrial and aquatic environments showcases their versatility and resilience in varying conditions.