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African Elephant

Photo Credit: Gary M. Stolz Although the African elephant is the largest and most powerful of all living land mammals, it is also amo...

Reptiles and Amphibians

Reptiles and Amphibians are closely related to the mammals and birds, however, they are cold-blooded, which means that their internal body temperature various according to the temperature of their environment.

Descended from amphibians, reptiles are better adapted to life on dry land, as they possess lungs in which they breath air. They reproduced by laying eggs, which in some species the eggs are laid on the ground and in other species, they hatch inside the female's body. The skin of all reptiles is thick, usually forming scales or plates, which may be smooth or rough and which prevent them from drying out.

Amphibians are the most primitive of all land vertebrates. The word "amphia" means "both live" and refers to the fact that, although they spend most of their adult life on land, they began life in the water and return to it to lay eggs. When the eggs hatch, the young have gills so that they can breath underwater. The gills are replaced by lungs at the end of their development, "metamorphosis" into adults. Like reptiles, amphibians lay eggs, but unlike them, fertilization is external in some species.

Reptile Fact For Today



Amphibian Fact For Today

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