The key distinction is the declared purpose at importation: breeding cattle must be certified for reproductive use and routed to approved facilities, while slaughter cattle proceed directly to USDA-inspected slaughter plants. Misclassification between these subheadings can result in significant customs penalties.

Yes. USDA APHIS requires a veterinary health certificate, brucellosis and tuberculosis test results, and an import permit. Female breeding cattle may also require pregnancy status documentation depending on the country of origin's bilateral agreements with the US.

Yes. The 320 kg threshold places these animals in a specific tariff subheading with its own duty rate, separate from lighter female breeding cattle. Importers should confirm the exact weight of each animal at time of entry to ensure correct classification.