Battery cage chinchilla and foxes in fur farming, and most recently for the Asian palm civet for kopi luwak production of coffee. An early reference to battery cages appears in Milton Arndt's 1931 book, "Battery Brooding", where he reports that his cage flock was healthier and had higher egg production than his conventional flock. At this early date, battery cages already had the sloped floor that allowed eggs to roll to the front of the cage, where they were easily collected by the farmer and out of the hens' reach. Arndt also mentions the use of conveyor belts under the cages to
African civet its dorsal crest to make itself look larger and thus more formidable and dangerous to attack. This behavior is a predatory defense. The perineal gland is what this civet has historically been most often harvested for. This gland secretes a white or yellow waxy substance called civet, which is used by civets for marking territory and by humans as a perfume base. Perineal and anal glands are found in both male and female African civets, however, the glands are bigger in males, which can produce a stronger secretion. The perineal glands are located between the scrotum and the prepuce in