Land vertebrates

lovethee History

Snakes, however, cannot chew. (animatronic dinosaur)The evolutionary path they chose early in their career required unusual adaptations for swallowing huge hunks of food:

(1) snakes are all predators, subsisting mostly on live prey;

(2) they ambush by stealth, not by moving about scanning for victims, hence snakes don’t meet a lot of potential prey each day;

(3) therefore snakes have to make the most of each opportunity and should attack the largest potential prey. (animatronic dinosaur costume for sale)The Darwinian processes that favor the selection of big prey have also equipped serpents with their special organs for throttling and stabbing. Pythons have a crushing attack. They coil around large victims, constricting whenever their prey exhales, suffocating it slowly and with an economical expenditure of force. (Contrary to popular myth, big constrictors don’t crush bones and pulp their victims into pudding; just enough force to asphyxiate seems to be the rule.) The poison attack evolved by several other snake families allows them to inject their venom with surgical precision through hollow fangs. (real dinosaur suit)Once the big victim is subdued by the constrictor’s embrace or by a dose of poison, the snake must swallow it whole, because no snake has cutting teeth suitable for slicing the victim’s body into bite-sized pieces.


Here is the nub of the problem: Snakes are long, narrow beasts with heads of very small width compared to many lizards and most frogs. Such a small, narrow head is a necessary component of the snake’s fundamental mode of movement, sliding through narrow paths and down burrows.(real animatronic dinosaur) A giant tropical toad may have a mouth nearly as wide as its body is long, and so it can gulp down prey nearly as large as itself. But the poor puff adder, having successfully brought down a monkey offering enough meat to keep the snake going for a month, now faces an item of food at least twice the width of its own mouth. The solution to this gustatory dilemma has generated the most elegant cranial architecture in land vertebrates.