The heaviest snake on record is an Anaconda at 600 pounds. Unlike human beings, snakes keep growing until they die.
Snakes have three layers of skin but only the outer, thinnest layer peels away when they shed.
A snake's skin is not slimy but rather hard and glossy which reduces friction as it slides over the ground. A snake's juvenile coloration may differ greatly from its adult coloration. Snakes have no eyelids and thus cannot blink their eyes. Most snakes have limited eyesight and can only see prey if it moves. Others, such as vine snakes, are more visually orientated.