Predators

Their return changed elk behavior and is often cited as an example of how predators affect whole ecosystems.

Organs called ampullae of Lorenzini detect the faint electric fields generated by animals.

They can reach speeds of around 100 kilometers per hour in short sprints.

The raptor is the fastest animal on Earth in a hunting dive.

Some pods specialize in particular prey, from salmon to seals, and pass their techniques down through generations.

Spinosaurus, the largest known carnivorous dinosaur, reached an estimated length of 14–18 metres — surpassing even T. rex at 12–13 metres. Unlike most theropods, Spinosaurus had dense bones (like a crocodile), short powerful hind legs, and a long narrow skull ideal for catching fish. A 2020 study found its tail was paddle-shaped, confirming it was a highly capable swimmer that hunted in African rivers.

Tyrannosaurus rex could bite with a force of approximately 35,000–57,000 newtons — enough to crush bone and rival the bite of large crocodilians. Studies of bite marks on Triceratops bones confirm T. rex routinely consumed bone marrow. Despite its fearsome jaws, T. rex had tiny arms that were nonetheless strong enough to lift around 180 kg each.

The now-extinct Barbary lion, larger and more robust than its African counterparts, was native to North Africa, including parts of Algeria. These majestic predators were revered in ancient cultures and tragically hunted to extinction in the wild by the early 20th century, a significant loss to biodiversity.

From lion cubs wrestling to dolphins leaping and chasing, play is common across the animal kingdom. It serves important developmental functions, helping young animals learn hunting skills, social cues, and physical coordination for survival.