Some animals have radial symmetry with four or five axes, like starfish, jellyfish and sea urchins. The only creature on Earth who is not symmetrical in any way is the sponge.

Almost all animals have symmetrical bodies. Bilateral symmetry is almost universal in all animals and is only very rarely ...

The favoured direction of the cichlid's attack corresponds to its laterally asymmetric head shape: It prefers to attack the prey fish either from the right or from the left side, depending on the ...

Which genetic factors can break the symmetry of an animal's body? To answer this question, a Konstanz research team led by ...