Prairie dog itself more noticeable to the predator. Predators, though, seem to have difficulty determining which prairie dog is making the call due to its "ventriloquistic" nature. Perhaps the most striking of prairie dog communications is the territorial call or "jump-yip" display of the black-tailed prairie dog. A black-tailed prairie dog will stretch the length of its body vertically and throw its forefeet into the air while making a call. A jump-yip from one prairie dog causes others nearby to do the same. Ecologists consider this rodent to be a keystone species. They are an important prey species, being the primary diet
Black-tailed prairie dog eagles ("Aquila chrysaetos"), ferruginous hawks ("Buteo regalis"), red-tailed hawks ("Buteo jamaicensis"), and prairie rattlesnakes ("Crotalus viridis"). Although now very rare, black-footed ferrets ("Mustela nigripes") were once a major predator of the black-tailed prairie dog. Black-tailed prairie dogs have been called "ecosystem engineers" due to their influence on the biotic and abiotic characteristics of their habitat, landscape architecture, and ecosystem structure and function. Research suggests black-tailed prairie dogs are a keystone species in some, but not all, geographic areas. Black-tailed prairie dogs enhance the diversity of vegetation, vertebrates, and invertebrates through their foraging and burrowing activities and by their presence as