Identification kit (2) for identifying a living creature (1), with a mark (4) that can be adhered to the creature (1) consisting of a male tag part (7) and a female tag part (8), with a longitudinal protrusion (9) and a complementary duct (20) respectively； and a biopsy kit (6) containing a capsule (37) and a stopper (38)； whereby the female tag part (7) is provided with a perforation (36) opening in the female duct (20), and the head (14) of the male longitudinal protrusion (9) has a shape complementary to the perforation (36), such that after they have been joined, the perforation (36) will be sealed tightly by the head (14).
