Hill's Pet Nutrition is barking up the right tree as one of the top producers of premium pet food worldwide. The company's products are available through pet supply stores, pet shelters, and veterinary professionals. Its cat and dog foods are produced and marketed in varieties that cater to a pet's dietary requirements, medical condition, and age. Hill's also makes animal treats. This subsidiary of Colgate-Palmolive was founded in 1948, after a veterinarian cooked up a special food to treat a guide dog's kidney problems.