Kopi Luwak has given way to intensive farming methods in which civets in battery cage systems are force-fed the cherries. This method of production has raised ethical concerns about the treatment of civets due to "horrific conditions" including isolation, poor diet, small cages and a high mortality rate. Although kopi luwak is a form of processing rather than a variety of coffee, it has been called one of the most expensive coffees in the world, with retail prices reaching / per kilogram. Kopi luwak is produced mainly on the islands of Sumatra, Java, Bali and Sulawesi in the Indonesian Archipelago. It is
Malayan civet the Malay civet includes Indonesia, Malaysia, Brunei, the Philippines and Singapore. In Malaysia, it occurs in Borneo, Banggi Island, Langkawi Island, Penang Island and in Peninsular Malaysia. It is also known from Sumatra. It was introduced to Sulawesi and the Maluku Islands. Museum records indicate that the Malay civet also occurred on the Indonesian islands of Java, Bawal and Telok Pai, and on the Philippine island Leyte. In 2012, an individual was photographed in Singapore. The Malay civet population in the Philippines may have originated in Borneo and colonized Palawan island naturally. It possibly later dispersed to the rest of