Asiatic lion known as "Indian lion" and "Persian lion". Following Meyer's first description of an Asiatic lion skin from Persia, other naturalists and zoologists also described lion specimens from other parts of Asia that used to be considered synonyms of "P. l. persica": In 2017, the Asiatic lion was subsumed to "P. l. leo" due to close morphological and molecular genetic similarities with Barbary lion specimens. Fossil remains of "Panthera spelaea" excavated in the Cromer Stage indicate that it represented a genetically isolated and highly distinct lineage. Fossil lion remains were found in Pleistocene deposits in West Bengal. A fossil carnassial excavated
Predator (fictional species) and which drives them to hyper-aggression. When this gland is over-stimulated, it sends the creatures into a frenzied rage, causing them to attempt killing any living thing in sight, including members of their own species. This "kill rage" can be contagious and spread from one Predator to another, driving them all to attack each other. The Predators as a species barely survived the wars provoked by their kill glands, and they have learned to control the gland's secretions with artificial hormone regulators. In Ian Edginton and Alex Maleev's graphic novel "Aliens vs. Predator: Eternal" and the videogame "Predator: Concrete Jungle",