Subheading 230910 applies specifically to dog and cat food put up for retail sale — meaning packaged in consumer-ready units with labeling directed at the end buyer. Bulk pet food sold to manufacturers or repackagers, and all feeds for other animals, fall under 230990 regardless of species.

FDA's Center for Veterinary Medicine (CVM) has jurisdiction over animal feeds and pet foods. Shipments may be subject to FDA examination and must comply with the Federal Food, Drug, and Cosmetic Act's adulteration and misbranding provisions; prior notice to FDA is required for all food imports, including animal feed.