Biology and Origin of Snakes

摘要: Snakes are not unique just because they lack limbs or crawl and venomous. The singularity of these animals lies in their different characteristics. Although snakes with “simple” intellects, have managed to colonize much the land also seas, only limits physiological, related temperature. Their elusiveness, speed, camouflage abilities make them contenders for survival. anatomy a snake, though it may seem simple can be summed up as long spine, is actually complex lifestyles species. Such types teeth venomous nonvenomous snakes, example. snake’s origin still something yet fully discovered. Fossil remains reveal Cretaceous period (145–66 million years ago). As today, we sum two hypotheses: originated from burrowing lizards marine reptiles. theories quite important points common: both underground well aquatic life, reptiles must eyelids like eardrums.