13.—(1) The owner of an affected animal which has been or is being kept on any holding, shall on demand by an inspector give such information as he possesses as to—
(a)that animal or any other animal or carcase which is or has been on that holding; and
(b)any other animal or carcase with which any animal or carcase mentioned in sub-paragraph (a), has or may have been in contact.
(2) Any person engaged in the purchase, sale, dispatch, transit or delivery of animals shall on demand by an inspector give such information as he possesses relating to any animal or carcase which is or has been in his possession or under his control.