North American beaver large, webbed hind feet. The unwebbed front paws are smaller, with claws. The eyes are covered by a nictitating membrane which allows the beaver to see under water. The nostrils and ears are sealed while submerged. A thick layer of fat under its skin insulates the beaver from its coldwater environment. The beaver's fur consists of long, coarse outer hairs and short, fine inner hairs (see Double coat). The fur has a range of colors, but usually is dark brown. Scent glands near the genitals secrete an oily substance known as castoreum, which the beaver uses to waterproof its fur.
The Inner or Deep Part of an Animal or Plant Structure The Inner or Deep Part of an Animal or Plant Structure The Inner or Deep Part of an Animal or Plant Structure is an official DVD released by Björk on August 31, 2004. It is a 45-minute film about the making of the "Medúlla" album. The DVD features clips of the studio performances by Dokaka, Shlomo, Rahzel and Mike Patton that formed the beats for many of the songs on the album. It was originally issued as a bonus feature on the multichannel DVD-A of 'Medulla' and then later reissued by itself as a separate disc. The title of the