Iams () is an American brand of dog food and cat food manufactured by Spectrum Brands in Europe and Mars, Incorporated worldwide. The food is formulated for the puppy/kitten, adult and mature stages of life. Veterinary formulas for pets with special dietary requirements are also produced.According to Iams, since 2006, studies have been conducted in pet owners' homes, P&G Pet Care's Pet Health & Nutrition Center and locations where dogs and cats are already living such as assistance dog organizations.