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Pet food


Pet food is plant or animal material intended for consumption by pets. Typically sold in pet stores and supermarkets, it is usually specific to the type of animal, such as dog food or cat food. Most meat used for nonhuman animals is a byproduct of the human food industry, and is not regarded as "human grade".

Four companies—Procter & Gamble, Nestlé, Mars, and Colgate-Palmolive—are thought to control 80% of the world's pet-food market, which in 2007 amounted to US$ 45.12 billion for cats and dogs alone.

Cat and dog food sales exceeded £1.4 billion in the United Kingdom and US$14.3 billion in the United States in 2005. In 2006, the value of the UK pet food market rose to just over £1.6 billion. The leading exporters of pet food for 2004 were France ($993 million), United States ($786 million) and the Netherlands ($511 million), while the leading importers were Japan ($718 million), Germany ($617 million) and the UK ($563 million).

Formulations of mainstream commercial pet foods are generally based on nutrition research and many manufacturers undertake animal nutrition studies. For instance, Mars, Incorporated funds the Waltham Centre for Pet Nutrition, which undertakes scientific research into pet nutrition and wellbeing, sharing its findings in publicly available peer-reviewed journals.

Fish foods normally contain macronutrients, trace elements and vitamins necessary to keep captive fish in good health. Approximately 80% of fishkeeping hobbyists feed their fish exclusively prepared foods that most commonly are produced in flake, pellet or tablet form. Pelleted forms, some of which sink rapidly, are often used for larger fish or bottom-feeding species such as loaches or catfish. Some fish foods also contain additives, such as beta carotene or sex hormones, to artificially enhance the color of ornamental fish.


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