Amoeba proteus

Widespread heterotrophic unicellular organisms with constantly changing shapes

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The mallard

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Geckos can walk on walls or even ceilings. The animation explains this ability.

Grass snake

A type of snake with a characteristic spot on its neck.

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Cattle typically live in stables. They were domesticated around the same time as swine. Cow's...

Common bottlenose dolphin

Bottlenose dolphins are sea mammals which use ultrasound for orientation.

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The domestication of the wolf began more than 10000 years ago. After humans, it is the most...

Sharks

The best known cartilaginous fish, sharks, do not chew their food; they use their razor-sharp...

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