Dung beetles are beetles that feed partly or only on the dung of mammals. They are a kind of scarab beetle. All these species belong to the superfamily Scarabaeoidea, and most of them to the family Scarabaeidae. The subfamily Scarabaeinae alone has more than 5,000 species.any dung beetles, known as rollers, roll dung into balls, which are used as a food source or brooding chambers. Other dung beetles, known as tunnelers, bury the dung wherever they find it. A third group, the dwellers, neither roll nor burrow: they simply live in dung.
Collagen is the main component of connective tissue, and is the most abundant protein in mammals, making up about 25% to 35% of the whole-body protein content. An atomic-force-microscopy image of collagen fibrils in a collagen fiber.t is mostly found in fibrous tissues such as tendon, ligament and skin, and is also abundant in cornea, bone, blood vessels, cartilage, intervertebral disc and the digestive tract. In muscle tissue, collagen serves as a major component of endomysium.
Collagen /ËkÉlÉdÊÉ¨n/ is the main structural protein in the extracellular space in the various connective tissues in animals. As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content.elatin, which is used in food and industry, is collagen that has been irreversibly hydrolyzed. Collagen also has many medical uses in treating complications of the bones and skin. The name collagen comes from the Greek ÎºÏÎ»Î»Î± (kolla), kÃ³lla  meaning , glue and -suffix, -Î³Î­Î½, gen denoting. producing