Crotal, for identifying animals, which consists of a female part in the form of a housing for receiving a respective male part, said female part being composed of a base piece (4) that defines the housing for receiving the male part and a mouth piece (5) that forms the mouth of the housing with means for retaining the male part inserted, which pieces (4) and (5) define complementary means (4.3 and 5.3) for the establishment between then of a retaining clip-fitting during assembly coupling, whilst when said pieces (4 and 5) are joined together they define an intermediate chamber (7) with which openings (4.4) and (4.5) of both pieces (4 and 5) communicate and via which the covering material (6) applied to the whole flows.
