Wildlife of China "ciwei" or the "thorned creature". Porcupines are rodents and hedgehogs belong to a separate order. Three species of Old World porcupine are found in China: the Asiatic brush-tailed porcupine, Indian crested porcupine, and Malayan porcupine. Many parts of the porcupine including the brain, organs, fat, quills and even the feces can be used to make traditional Chinese medicine. Porcupines are raised on farms. In the early 20th century, the Eurasian beaver was hunted to near extinction for its fur and castoreum, a scent gland secretion used to make perfume and medicine. Though the global population has rebounded, the animal remains
Castor oil in July 2007, Indian castor oil sold for about US$0.90 per kilogram (US$0.41 per pound) whereas U.S. soybean, sunflower and canola oils sold for about US$0.30 per kilogram (US$0.14 per pound). Annually 270,000–360,000 tonnes (600–800 million pounds) of castor oil are produced for a variety of uses. In the food industry, castor oil (food grade) is used in food additives, flavorings, candy ("e.g.", polyglycerol polyricinoleate or PGPR in chocolate), as a mold inhibitor, and in packaging. Polyoxyethylated castor oil ("e.g.", Kolliphor EL) is also used in the food industries. In India, Pakistan and Nepal food grains are preserved by the