imperceptibly woven into the fabric of human society". Animal Ingredients A to Z (2004) and Veganissimo A to Z (2013) list which ingredients might be animal-derived. The British Vegan Society's sunflower logo and PETA's bunny logo mean the product is certified vegan, which includes no animal testing. The Leaping Bunny logo signals no animal testing, but it might not be vegan. The Vegan Society criteria for vegan certification are that the product contain no animal products, and that neither the finished item nor its ingredients have been tested on animals by, or on behalf of, the manufacturer or by anyone over whom the manufacturer has control. Its website contains a list of certified products, as does Australia's Choose Cruelty Free (CCF). The British Vegan Society will certify a product only if it is free of animal involvement as far as possible and practical, including animal testing, but "recognises that it is not always possible to make a choice that avoids the use of animals", an issue that was highlighted in 2016 when it became known that the UK's newly introduced £5 note contained tallow. Meat, eggs and dairy Like vegetarians, vegans do not eat meat (including beef, pork, poultry, fowl, game, animal seafood). The main difference between a vegan and vegetarian diet is that vegans exclude dairy products and eggs. Clothing Many clothing products may be made of animal products such as silk, wool (including lambswool, shearling, cashmere, angora, mohair, and a number of other fine wools), fur, feathers, pearls, animal-derived dyes, leather, snakeskin, or other kinds of skin or animal product. While dietary vegans might use animal products in clothing, toiletries, and similar, ethical veganism extends not only to matters of food but also to the wearing or use of animal products, and rejects the commodification of animals altogether. Most leather clothing is made from cow skins. Unlike ethical vegans, dietary vegans do not oppose the use of leather itself and may continue to wear leather they had bought before adopting the diet on the grounds that they are not financially supporting the meat industry. Ethical vegans may wear clothing items and accessories made of non-animal-derived materials such as hemp, linen, cotton, canvas, polyester, artificial leather (pleather), rubber, and vinyl. Leather alternatives can come from materials such as cork, piña (from pineapples), cactus, and mushroom leather. Some vegan clothes, in particular leather alternatives, are made of petroleum-based products, which