Some have smooth scales, while others have keeled scales. Some snakes have only one lung. There are even snakes born with two heads When this happens the heads sometimes fight each other. But the strange thing is even though the snake only has one stomach, the heads still fight over food. There are 2,700 species of snakes.
Snakes are part of the reptile family.
They live everywhere except by the North and South poles. Snakes have long, thin cylinder-shaped bodies that are covered with scales. Each snake has a distinctive pattern on its scales and some are brightly colored. Snakes have a special slender, forked tongue that can taste smells by bringing smells from the air to the Jacobson's organ inside the mouth. They also have a special opening in their lips so their tongue can flick in and out of their mouth without them having to open their mouth.