Other pack hunting mammals include chimpanzees, dolphins, lions, dwarf and banded mongooses and spotted hyenas. Other animals that use them are hares, mongooses, hyenas, owls, pythons, and lizards. Bushbucks, chameleons, dik-diks, duikers, mongooses, sunbirds, and warthogs have also been reported. Small mammals found in the region include small Indian civets, mongooses and badgers. Many larger animals prey upon centipedes, such as mongooses, mice, salamanders, beetles and snakes. Moreover, meerkats have more call types than do banded mongooses. They also prey on small carnivores, such as mongooses, polecats, and wildcats. The feliforms include families such as the cats, the hyenas, the mongooses and the civets. The larger species bear a resemblance to such placental carnivores as mongooses or mustelids. Similar adaptations are seen in other small predatory mammals such as mongooses and hedgehogs. Other animals found in the delta include frogs, turtles, tortoises, mongooses, and the Nile monitor. Other small mammals include mongooses and giant rats. The use of predators including ferrets, mongooses and monitor lizards has been found unsatisfactory. The plural of "mongoose" is "mongooses". Mongooses, much like goats, have narrow, ovular pupils.