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Reptiles - Questions and Answers: Reptile facts for kids

Reptiles air-breathing vertebrates like lizards, snakes, turtles, and crocodiles. These are vertebrates with respiratory organs whose temperature changes depending on the environment in which they live.
The largest number of reptiles lay eggs.

When did the first reptiles appear on earth?

The ancestors of today's reptiles were amphibians, the first creatures to emerge from the water and adapt to life on earth more than 310 million years ago. Real reptiles have evolved from the original lizards and created the largest group of animals over 100 million years ago.

Then huge dinosaurs ruled the world.

The extinct dinosaurs were the largest reptiles and land animals in general. Some were 30 meters long and 12 meters high. Their heads were small, their hind limbs stronger than their front ones. There were also a lot of bipeds.

Later begins a period marked by significant changes. By then, the warm and humid climate had become more temperate. The swamps dried up and much of the tropical vegetation used to feed the huge reptiles was gone. These powerful, gigantic animals were slowly disappearing as victims of climate change. Some survived only due to better adaptation to lower temperatures.

Do reptiles sleep in winter?

In areas where summers are warm and winters cold, most reptiles spend the winter in a deep sleep that lasts from late fall to early spring. During this winter's sleep, the reptiles remain completely immobile, in a safe place.


Green or ordinary iguana is the most prominent specimen of its kind. It is very large and can reach two meters in length, of which 45 cm is the body and everything else is tail
Green or ordinary iguana is the most prominent specimen of its kind. It is very large and can reach two meters in length, of which 45 cm is the body and everything else is a tail

How many poisonous reptiles are there?

Some snakes are poisonous, but most reptiles are completely harmless. Of the 2450 known species of snakes, only 175 represent a deadly danger to humans. Among the lizards, only two species are poisonous. One lives in some deserts in the United States and the other, called pearl lizards, in southern Mexico.
Hundreds of other lizards are completely harmless. There are poisonous turtles and no crocodiles.

How does a lizard detach its tail?

When an animal tries to grab a lizard for its tail, it leaves it at its enemy because it has a transverse bulkhead in the middle of each tail vertebra so that the long tail is easily detached (a protective reaction). The severed pep twists, tricking the attacker until the lizard escapes.

This is certainly painful for the animal, but it saves its life. Tail re-grows and its called regeneration.

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