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The anatomy of annelids is demonstrated through the example of the common earthworm.
One of the most common types of Anatidae, the ancestor of the domestic duck.
There are some species in the animal kingdom that do just fine with a single meal a month or...
Widespread heterotrophic unicellular organisms with constantly changing shapes
A type of snake with a characteristic spot on its neck.
The largest land mammal on Earth.
A species of mollusc widespread in freshwaters.
A species of snake widespread in Europe and Asia.