Petco Animal Supplies is a retail chain that specializes in pet supplies and services. The company was founded in 1965 and has over 1,500 locations across the United States, Mexico, and Puerto Rico. Petco offers a wide range of products for pets, including food, toys, and grooming supplies. The company also provides services such as dog training and veterinary care. Petco is privately held and is headquartered in San Diego, California.