Products that commonly land here include certain rendered animal fats not classified elsewhere, edible blood products, specialty glandular extracts used as food ingredients, and other processed animal-derived items that lack a dedicated SITC heading. The key criterion is that the product must be edible and of animal origin but not fit a named category such as meat, dairy, eggs, or seafood.

USDA FSIS has jurisdiction over products derived from livestock and poultry when they meet the statutory definition of a 'meat food product' or 'poultry product.' FDA governs most other edible animal-origin ingredients, including seafood-derived products and certain rendered fats. When the regulatory pathway is unclear, importers should consult with a licensed customs broker and consider submitting a pre-import inquiry to the relevant agency before the first shipment.