The invention relates to an animal ear tag which is intended to be able to be anchored on an animal's ear by means of a dome (25) and which has a housing (2, 23, 30, 33) enclosing an electronics assembly (1) and a battery (6, 21), and a panel surface (12, 22, 31, 34) on which identification data relating to the animal are intended to be directly visible in clearly legible characters, wherein the panel surface (12, 22, 31, 34) is located below the housing (2, 23, 30, 33) when the ear tag is placed on the animal. The centre of gravity of the housing (2, 23, 30, 33) and of the parts enclosed by the latter lies inside an area (15) protruding downwards from the spike axis (8), which area (15) is not higher than 2 cm and, in the horizontal lying normal to the spike axis (8), is not wider than 1 cm.
