Predator (fictional species) which are consisted of recorded vocalizations of animals such as lions, tigers, leopards, jaguars, cougars, black bears, grizzly bears, alligators, camels, and elephants. Predators will mimic human language on occasion, and have been shown to use their helmets to understand and speak human languages. Author Steve Perry designed a constructed language set for the "Aliens vs. Predator" novel series. Predator (fictional species) The Predator (also known as Yautja or Hish-Qu-Ten) is a fictional extraterrestrial species featured in the "Predator" science-fiction franchise, characterized by its trophy hunting of other species for sport. First introduced in 1987 as the main antagonist of
Apex predator removed, lake trout, the suppressed native apex predator, diversified its prey selection and increased its trophic level. As a terrestrial example, the badger, an apex predator, predates on and also competes with the hedgehog, a mesopredator, for food such as insects, small mammals, reptiles, amphibians and ground-nesting bird's eggs. Removal of badgers (in a trial investigating bovine tuberculosis) caused hedgehog densities to more than double. Predators that exert a top-down control on organisms in their community are often considered keystone species. The presence of any top predator (bear, big cat, wolf, dog, or especially human) can greatly alter the behavior