Why did snakes develop venom?

Because snakes have no limbs or paws, they developed venom to help them immobilize and kill their prey. 2. Where in the world can you find snakes? Snakes have adapted so that they can survive anywhere in the world, except for the polar regions. 3. Snakes have a wide variety of sense organs not often found in other animals. What are they? Some snakes have concave heat sensors called pit organs just below their eyes. Some have light-sensitive cells or eyes in which the lens works like a camera. All snakes have a Jacobsons organ, which allows a snakes tongue to track prey. 4. How are snakes able to swallow prey animals that are much larger than the opening of their mouths? A snakes jaw bone and skull are held together by elastic ligaments, enabling the snake to separate them slightly and open its mouth wide enough to swallow large preywider than seems possible at first. In addition, a snakes lower jaw divides at the chin, which allows it to open its mouth even farther. 5. What effect ...  more