These guttural noises are identified as cooing, roaring or grunting. They may also make sighing, grunting or groaning noises at times. The snow leopard's vocalizations include meowing, grunting, prusten, and moaning. They make grunting and hissing sounds, like other cassowaries. Lauer said the grunting gradually turned into "yelping". They can make a few hissing or grunting sounds only heard when very close. When mating, males emit loud grunting sounds. Hissing and grunting by the male during mating is common. The displaying adult male may produce some booming, grunting and raucous noises. As a female approaches, the male will begin circling and making grunting noises. Coatis communicate their intentions or moods with chirping, snorting, or grunting sounds. When mating, the male makes grunting vocalizations. Sabalenka frequently accompanies her shots with loud grunting. Like the sassabies, hartebeest produce quiet quacking and grunting sounds. With a lot of grunting and screaming, Irene makes the jump.