Barbary lion the King of Morocco's collection. At the beginning of the 21st century, the Addis Ababa Zoo kept 16 adult lions. With their dark, brown manes extending through the front legs, they looked like Barbary or Cape lions. Their ancestors were caught in southwestern Ethiopia as part of a zoological collection for Emperor Haile Selassie I. In March 2010, two lion cubs were moved to the Texas Zoo in Victoria, Texas, where efforts were made to preserve Barbary lions under the WildLink International conservation programme. Whether the cubs are of Barbary lion descent was not determined. In 2011, the Port Lympne
Apex predator of such a smaller predator as a badger. Apex predators can have profound effects on ecosystems, as the consequences of both controlling prey density and restricting smaller predators, and may be capable of self-regulation. They are central to the functioning of ecosystems, the regulation of disease, and the maintenance of biodiversity. When introduced to subarctic islands, for example, Arctic foxes' predation of seabirds has been shown to turn grassland into tundra. Such wide-ranging effects on lower levels of an ecosystem are termed trophic cascades. The removal of top-level predators, often through human agency, can cause or disrupt trophic cascades. For