The narrow-headed garter snake is a nonvenomous snake found in and near the cool ... The main causes of their population declines are habitat alteration and the introduction of nonnative predators — ...

It can occur between species that are predator and prey ... which is food for the garter snake. Over time, some genetic variants of the snake that are resistant to the toxin have emerged ...

Garter snakes, the most common type of snake in the U.S., often like to hide ... Snakes hide in these spots to wait for prey and hide from predators. They also like to use natural holes in the ...

as basking sites and cover for avoiding predators. RANGE: This snake is found in Arizona and New Mexico. MIGRATION: This snake does not migrate. BREEDING: Mating occurs in warm microclimates along ...