The police officer should remember that wounds should be photographed, even when they are on a living person. The officer should therefore try to contact the doctor who has treated an injured person in order to discuss the possibility of photographing. This should not be delayed too long because a wound changes its appearance as it heals or is altered by therapy. Especially in the case of bite wounds and wounds of which the form reveals the characters of the weapon or instrument, it is important that photographing should be done before a scab forms or an operation becomes necessary. A scale should always be laid next to the wound.