Hill's Pet Nutrition is barking up the right tree as one of the top producers of premium pet food worldwide. The company's Science Diet and Ideal Balance pet foods are available through pet supply stores and veterinary professionals while its Prescription Diet therapeutic products are sold only through veterinarians. 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. It sells its products in the US, Japan, and more than 90 other countries worldwide. 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.