You may notice in this video that the chimps often hold the snow out on their extended lower lip to inspect it. This behavior is common with wadges, the clumps of fibrous foods such as seeds and leaves that chimpanzees chew and suck the juice out of (see below). For some reason, chimps love to inspect their wadges as they chew them. Perhaps snow falls into the same category to them, or maybe it’s just too cold to keep in their mouths.
