CBP generally requires registration papers or a certificate of pedigree from a recognized breed association demonstrating that the animal is registered or eligible for registration in an approved herdbook. A commercial invoice stating the animal's intended use for breeding, along with the USDA APHIS import permit and health certificate, rounds out the standard documentation package. Animals that cannot be documented as purebred breeding stock are classified under the non-purebred heading 010239.

Yes. HTS heading 0102 covers bovine animals other than cattle, encompassing both water buffalo (Bubalus bubalis) and American bison (Bison bison). Purebred breeding animals of either species fall under 010231, while non-purebred or non-breeding animals — including live bison — are classified under 010239. The distinction between species matters for APHIS health protocols, which differ between water buffalo and bison.