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An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
Otters are semi-aquatic predatory mammals.
Large, extinct species of cats named after the shape of their large canine teeth.
The largest species of lizard that lives in isolation. Even a single bite of it can be fatal.
Many freshwater fishes are also popular as food.
A type of large freshwater crayfish widespread in Europe.
With the example of the stag beetle we demonstrate how insects’ muscles function, how insects...
This owl species living in the furthest northern regions of our planet has adapted brilliantly...