Some describe a creature that is largely nocturnal, that forages for nuts, berries, fish, and possibly game in small family groups and communicates through grunting, howling or screeching cries and/or through the banging of fallen branches on tree trunks. Most maintain that this creature is very wary of humans, hides by standing completely still (sometimes behind trees) and whose presence may be characterized by a foul smell, sometimes described as rotting eggs.