The majority of snakes are oviparous: they lay eggs to reproduce.
Their body, long and elongated, is covered with scales and they move by crawling on the ground (crawling).

Snakes have the specific characteristics of having a bifid tongue, eyelid-less eyes, an articulated skull, and movable jaws that facilitate the ingestion of prey.
There are approximately 2,700 species of snakes, of which just under 400 are poisonous.

All snakes are carnivorous. They swallow their prey without chewing it and then spend the rest of the time digesting it.
Some can swallow very large prey because their lower jaw can detach from their upper jaw.

Snakes are present on all continents (except Antarctica), and have adapted to all climates (except polar climate).