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
Civet Civet A civet is a small, lithe-bodied, mostly nocturnal mammal native to tropical Asia and Africa, especially the tropical forests. The term civet applies to over a dozen different mammal species. Most of the species diversity is found in southeast Asia. The best-known civet species is the African civet, "Civettictis civetta", which historically has been the main species from which was obtained a musky scent used in perfumery. The word "civet" may also refer to the distinctive musky scent produced by the animals. A minority of writers use "civet" to refer only to "Civettictis", "Viverra" and "Viverricula" civets. But in