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Deinonychus antirrhopus, the 'terrible claw', was a carnivorous dromaeosaurid dinosaur.
Dogs are the domesticated subspecies of grey wolves.
Larvae of this type of mayflies spend the first three years of their lives in water,...
The animation shows the anatomy of turtles.
The most ancient group of animals, they live underwater, lack real tissues and body symmetry.
Find out the difference between the two species of this magnificent animal: the African and...
A mammal with features typical of reptiles: it lays eggs and has a cloaca.
Many freshwater fishes are also popular as food.