3. The dealer shall ensure that he only imports or exports animals that are identified and meet the requirements of Community law for intra-Community trade and, in the case of cattle, come from herds that are officially free of tuberculosis, brucellosis and leucosis, or are slaughter animals meeting the requirements of Article 6(3), or, if slaughter animals under a disease control programme, the requirements of Article 13(1)(a), of Council Directive 64/432/EEC.