At least 10 distinct vocalizations have been identified: snorting, honking, bleating, roaring, squeak-panting, moo-grunting, shrieking, groaning, rumbling and humphing.
en.wikipedia.org The sound of the album ranges from bleating vocals to acoustic guitar songs and techno-style synthesizer instrumentals.
en.wikipedia.org The basic actions are stand/lie down, bleat, listen, jump, and rub a tree.
en.wikipedia.org The mating call sounds like a high-pitched, penetrating, nasal, sheep-like bleat.
en.wikipedia.org