SNAKE

SNAKE
Written by Belva Tabina P




Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes. We can find a snake in every forest, or maybe in a pet store, someone pets them. Snake is a common animal. Many people kinda scared because they are so scary and vicious predators. But they are actually beautiful. 


So, ins science classification, their kingdom is Animalia, their phylum is Chordata, their class is Reptilia, their order is Squamata, their clade is Ophidia, and their suborder is Serpentes. 


Snakes have been around for millions of years. Snakes existed during the dinosaur periods. Snakes were very modern reptiles compared to the dinosaurs. Snakes first appeared during the late Cretaceous period (about 146 million years ago), towards the end of the time of the dinosaurs. So the late dinosaurs, like Tyrannosaurus Rex and Triceratops were around when the first snakes evolved. A snakes diet would have been warm-blooded mammals and they could see whether potential prey was warm or cold-blooded. As most or all dinosaurs were cold-blooded, it was very rare for a snake to make a meal out of them.

So there are over 2,500 different species of snakes on our planet. Snakes live in a variety of land and water habitats. The most abundant snakes and the largest snakes are found in tropical climates such as rainforests. Snakes are found on every continent in the world except Antarctica where it is too cold for them to survive. There are also no snakes native to Hawaii, Iceland, Ireland or New Zealand.


Snakes have a long, narrow body with scales c
overing their skin. Snakes have no eyelids, no external ear openings, and no legs, although a few snakes, such as boa constrictors and pythons have vestigial (concealed or hidden) hind legs which are tiny, clawed digits known as ‘anal spurs’ which are used to grasp during mating. As they grow, snakes shed their old skin and the film that covers their eyes regularly. Like other reptiles, snakes are cold-blooded.


All snakes are carnivorous (meat-eaters). Snakes eat rodents and other mammals, birds, reptiles, fish, amphibians, insects and eggs. Some snakes (like cobras, vipers, and rattlesnakes) are venomous and kill or paralyze their prey by injecting poison through hollow fangs. The venom from venomous snakes paralyzes the nervous system, causes heart and lung failure, or causes internal bleeding of their prey.
Some snakes like boas and the anacondas, kill their prey by squeezing it to death, the squeezing does not always crush their victims but rather prevents it from breathing and suffocates it. Snakes do not chew their food or even bite it into pieces they just swallow their food whole.

So this is one of the snake species I really like. A rare white snake was recently found in Australia. The white snake was rescued from the wild in Northern Territory, Australia

More about the Slaty-grey snakes:

  • Slaty-grey snakes are non-venomous
  • Slaty Grey snakes are usually brown or black, but the rescued snake is a striking white snake with pearly scales and black beady eyes
  • The non-venomous snake grows up to 1.3m in length
  • This species is native to Australia

Question!
1. How do the non-venomous snakes eat their prey?
2. Where we cannot find snakes?
3. What is the snake's clade?
4. When snakes first appear?
5. What is the main idea of paragraph 4?

Presentation
https://sg1-broadcast.officeapps.live.com/m/Broadcast.aspx?Fi=aa83f36769621bc3%5Fdff62c46%2D08d0%2D4040%2Dbc36%2Df41859d8a92a%2Epptx

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