Animals

There are 2,500 known flea species.

From the common mallard comes the domestic duck.

Unlike most lizards, crested geckos do not have eyelids.

There are seven subspecies of this bird:

They drink the sap of birch trees.

Dik-diks can tolerate air temperatures up to 40° C.

Most crustaceans breathe using gills, however, some species have developed primitive lungs.

Limulus is a genus of horseshoe crab, with one extant species, the Atlantic horseshoe crab (Limulus polyphemus). Limulus  first appeared on earth about 425 million years ago during the Silurian period.

They are a species of marine hydrozoan, found in every ocean, except for the Arctic Ocean.

Ladybirds’ main predators are birds.