Barbary lion In the early 20th century, when Barbary lions were not common anymore, they were sighted in pairs or in small family groups comprising a male and female lion with one or two cubs. Between 1839 and 1942, sightings of wild lions involved solitary animals, pairs and family units. Analysis of these sightings indicate that lions retained living in prides even when under increasing persecution, particularly in the eastern Maghreb. The size of prides was likely similar to prides living in sub-Saharan habitats, whereas the density of the Barbary lion population is considered to have been lower than in moister habitats.
Apex predator an environment is suggestive. "Anomalocaris" was an aquatic apex predator, in the Cambrian. Its mouthparts are clearly predatory, and there were no larger animals in the seas at that time. Carnivorous theropod dinosaurs including "Allosaurus" and "Tyrannosaurus" have been described as apex predators, based on their size and dietary needs. A Permian shark, "Triodus sessilis", was discovered containing two amphibians ("Archegosaurus decheni" and "Cheliderpeton latirostre"), one of which had consumed a fish, "Acanthodes bronni", showing that the shark had lived at a trophic level of at least 4. Among more recent fossils, the sabre-tooth cats, like "Smilodon", are considered to