Snakes have a long, legless, flexible body that is covered with dry scales. When snakes move about on land, they usually slide on their belly. Snake's eyes are covered by clear scales rather than movable eyelids; therefore, their eyes are always open. They repeatedly flick out their narrow, forked tongue, using it to bring odors to a special sense organ in the mouth. Snakes belong to the order of animals called reptiles. This group also includes crocodiles, lizards, and turtles. As with the other reptiles, snakes maintain a fairly steady body temperature by their behavior. They raise their temperature by lying in the sun or lower it by crawling into the shade. They live almost everywhere, in deserts, forests, oceans, streams, and lakes. Some are ground dwellers, others live in trees, and other snakes spend most of their lives in water. There are a few areas where snakes do not live. They cannot survive in places where the ground stays frozen the year around, so they are missing in the
There are somewhere between 2,500 and 3,000 snake species around the world. With so many types of snakes in the world, a good classification system is a must! Snakes are grouped by the same scientific classification that applies to all other animals. Snakes are part of the Squamata order of reptiles -- an order that also includes most lizard species. All types of snakes fall into one of 18 families within the Squamata order, and each snake family is further broken down into genus and species.
Facts about snakes
1.Snakes evolved approximately 120 million years ago from their closest descendant, the Monitor lizard
2.There are approximately 2,980 Species of Snakes in the World today.
3. Only 10% are Venomous, with very few, about 2%, representing a danger to humans.
4. Snakes live on all the world’s continents except
5.Snakes depend heavily on “chemoreception” for tracking prey and recognizing their environment. A snake’s flickering tongue picks up scent molecules from the surrounding environment and passes them to the Jacobson’s Organ for analysis.
6. Snakes, like all Reptiles, are Cold Blooded (Ectothermic) and cannot generate internal heat. Therefore, Snakes cannot sustain high aerobic activity, (chasing prey, escaping predators) for longer than a few minutes.
7. All Snakes molt or shed their skin on average three to four times a year. This allows them to grow and replace old scales.
8. Vertical Eye Pupils are typical of nocturnal species not necessarily venomous species. In normal light conditions the pupils are contracted into slits.
9. Climbing Snakes (Arboreal) are normally long and thin. Terrestrial Snakes (Land Dwelling) and Burrowing Snakes are short and stout with short tails.
10. Snakes must ingest between 6 and 30 meals per year, approximately one meal every two weeks. However, some Snakes can shut off their digestive system and not eat for several months after a very large meal.
11.Snakes in captivity live between 8 and 25 years. Large species like Anacondas and Pythons live up to 40 years.