Abstract: The aim of the invention is to avoid injury to blood vessels that are situated in claws, when cutting claws with claw clippers or scissors, in particular of dogs. To achieve this, a transilluminator (8) is provided on the claw clippers below the cutting opening (15), said device permitting a visual recognition of the course of blood vessels (18) immediately before the cut, so that the exact point of incision can be determined outside living cell tissue.