Snakes Vs. Vipers
Difference Between Snakes And Vipers
Snake, a limbless scaly reptile with a very long body. Snakes developed from one thing like a burrowing lizard and are intently associated to lizards, differing from them within the full loss of forelimbs, within the absence of movable eyelids and exterior ears, and in sure different structural specializations, notably these of the skull and jaw. Like other reptiles, snakes are cold-blooded animals-that is, their body temperature isn’t fixed however varies with the temperature of the environment.
Snakes do not appear as fossils until the Cretaceous Interval, about 100 million years ago. Contemplating their relatively recent origin, snakes are an unusually diverse group. The number of species is estimated at between 2,500 and three,3000. Of those, less than 15% are venomous, and probably fewer than 200 species will be thought of harmful to man.
There is a general fear from snakes, widespread all through the world. Primitive folks and historical cultures typically feared or revered snakes, and a few credited them with particular powers over nature and healing, or credited them with magical intelligence.
Vipers are venomous snakes. The fang-bearing bone (maxillary) on each side of the higher jaw not only is much shorter than in most other snakes but in addition can be rotated. The fangs, which are hole like hypodermic needles, are normally carried folded and relaxed horizontally alongside the roof of the mouth. When ready for a chunk, a viper erects these fangs to a perpendicular position by rotating every maxillary on the front end of the supporting prefrontal bone.