Animals

Fleas have been known since the Mesozoic era (some 165 mya).

They are an endangered species.

Being an invasive species, sea lamprey found no natural predators, competitors, parasites, or pathogens in the Great Lakes.

They are excellent climbers.

Adult cassowaries have a black body with a blue head, a reddish cape, and two red wattles hanging down around the throat. The head is protected by a large casque made of bone tissue.

The herd structure of bonobo is largely characterized by egalitarianism (gender equality) and the dominance of sexual interaction between individuals.

Tawny frogmouths life span in wild is approximately 10 years.

They can lift objects 150 times heavier than their body weight.

The first breeding farm of polar foxes was established in North America in 1897.

There is considerable variation in beak structure in birds of paradise of different species.