The hammerhead titanothere (Na'vi name: 'angtsìk) is a large Pandoran herbivore, approximately eleven meters (36 feet) long, which is almost twice the size of a Terran elephant. This massive, grazing creature travels in moderately large herds or packs of 10-20 animals. It is fairly social, but also extremely territorial and hierarchical. Constant threat displays, both visible and audible, are very common during the hammerhead titanothere's day. When angered (which happens easily and very often), a titanothere will lower its head and charge at the perceived threat. The sheer momentum and ferocity of this display is usually enough to send any Pandoran creature running for cover, including mountain banshees and even viperwolf packs. When wanting to avoid any conflict, hammerheads will raise a large "fan" of brightly colored, feather-like skin flaps on the top of its head. This display, usually accompanied by a loud roar, is usually enough to send many animals running away. Hammerhead titanotheres group together when attacked by a thanator or leonopteryx, which are their only known predators. Many titanotheres charging at a perceived threat is even more intimidating than a single angry titanothere. Fighting males will attempt to injure their opponents' eyes with the knobs at the ends of their hammers. The titanothere is highly territorial. Alpha males use their considerable momentum to spread their scent by smashing trees, thus warning other animals (including other titanothere bulls) to steer clear. Despite the shape of heads which might hinder their movements within forests, they actually inhabit forests and jungles in addition to open grasslands. An aging titanothere will sometimes travel long distances in order to die in a sacred resting place such as the Hammerhead Graveyard. These sites are exceedingly rare; the animals' behavior is possibly due to the influence of Eywa. They look and act like Earth’s rhinos.