Deinonychus antirrhopus, the 'terrible claw', was a carnivorous dromaeosaurid dinosaur.

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Large white butterfly

The large white butterfly is a common species of butterflies, through which we...


The most ancient group of animals, they live underwater, lack real tissues and body symmetry.

Tyrannosaurus rex ‘tyrant lizard’

Large carnivores, perhaps the best known of dinosaurs.

Common earthworm

The anatomy of annelids is demonstrated through the example of the common earthworm.

African elephant

The largest land mammal on Earth.

Freshwater fishes

Many freshwater fishes are also popular as food.


Tardigrades can survive in extreme environments, they can even stay alive in outer space.

How do fish breathe?

Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.

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