330 C.M.R. 20.03
(2) The following documents shall be maintained for each dog and shall be kept for a period of one year following its death or release from use:
(7) Any evidence of illness, sickness or injury, affecting the whole animal or any part of it, as determined by visual examination, palpatation by hand, and or other methods as necessary, shall deem an animal unfit for use, training or sale as a guard animal. Such conditions may include: