Yes, a garter snake is a reptile belonging to the genus Thamnophis within the family Colubridae, which comprises snakes.
It is generally illegal to keep wild garter snakes as pets because capturing them from their natural habitat is prohibited in many areas to protect ecosystems. It is best to acquire garter snakes from reputable breeders or reptile rescues that provide captive-bred specimens.
Garter snakes are non-venomous constrictors that subdue their prey by constriction. Although they can retain toxins from some amphibian prey, they are not dangerous to humans.
Yes, garter snakes do eat lizards as part of their varied diet, which also includes amphibians, earthworms, small fish, and insects.