Purina Corporation was the first pet food manufacturer to be founded in 1894 and has a history of 100 years. Its Guanneng dog food is well-known in the American dog breeding industry, and 8 of the top 10 AKC champion dogs in the United States are raised by Guanneng. Punari dominates the domestic market, but it does not score high in AAFCO's evaluation, lacks nutrients, contains artificial additives, and is popular for its low price.