livestock ear tag comprises a male component 1 and a female component 8. The male component comprises a panel portion and a stem 4 having a tip 5. The panel and the stem are made integrally of the same material. The tip and the stem are made of a plastic material, the tip being harder than the stem. The male component has a predefined weakness point in which the male component will tear when a pulling force exceeding a predetermined value is exerted between the tip and the panel. The weakest point is in the interface between the stem and the tip. The weakest point is formed of strings 29 integral with the stem. The strings have a total cross section smaller than the stem and fill recesses 16 in the tip. The recesses 16 considerably increase the contact surface between the strings 29 and the tip 5. The female component 8 has an eye portion 28 equipped with a retaining ring 14. The eye portion and ring are made of a plastic material, the retaining ring being harder than the eye portion. The retaining
