Reptiles are cold-blooded, terrestrial vertebrates covered in scales that breathe through lungs and lay eggs. They can live both on land and in water, and while most are carnivorous, their hearts have a unique structure with two atria and one ventricle. Specific interesting facts are that baby snakes are more venomous than adults, a chameleon's tongue can double its body size, and reptile eggs develop inside an amniotic sac filled with liquid.

1. REPTILES
By Fernando López, Carlos Pereira and Blanca
Sarrión.

2. A LITTLE DESCRIPTION
ABOUT REPTILES
The reptiles are vertebrates terrestial animals, but some spend a lot
of time in the water. They are poikilotherms, or cold-blooded.
Reptiles bodies are covered with hard scales. Most of them are
carnivores. They breathe by lungs.They are oviparous. The eggs
develop inside a sac filled with liquid, called amnion.

3. CURIOSITES
Snakes: The venom of the babies snakes is more powerful than the
adults snakes.
Chameleons: The tongue of the chameleon doubles twice the size of
his body.
Reptiles: Their heart has two atrium and one ventricle with one or two
cavities.

4. INFORMATION SOURCE
ca.wikipedia.org/wiki/Rèptil
Essential Natural Sciense 1