An electrode arrangement (1500, 1500') for applying electrical signals to skin of an animal comprising: a flexible electrically non-conductive substrate (1520; 1720); at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) provided on a first surface of the substrate (1520; 1720) for applying electrical signals to the skin when placed on the skin; at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758) connected to a respective electrode (1511, 1512; 1511, 1512; 1731 - 1738) for providing electrical signals to the respective electrode (1511, 1512; 1511, 1512; 1731 - 1738); and an electrically non-conductive sealing arrangement (1531, 1532) connected to the substrate (1520; 1720) to seal the substrate (1520; 1720) and the skin to prevent ingress of moisture to said at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) and to said at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758) at the connection to the respective electrode (1511, 1512; 1511, 1512; 1731 - 1738); CHARACTERISED BY: the substrate (1520; 1720) having a part annular, an annular or a crescent shape and the at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) having a part annular shape, the electrically non-conductive sealing arrangement comprising a strip of waterproof, electrically non-conducive gel being disposed around the edges of the at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) and over said at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758), said substrate (1520; 1720) shape having a convex side, wherein an area adjacent the electrode arrangement adjacent the a convex side of the substrate (1520; 1720) is not covered by the electrode arrangement (1500, 1500'). a flexible electrically non-conductive substrate (1520; 1720); at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) provided on a first surface of the substrate (1520; 1720) for applying electrical signals to the skin when placed on the skin; at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758) connected to a respective electrode (1511, 1512; 1511, 1512; 1731 - 1738) for providing electrical signals to the respective electrode (1511, 1512; 1511, 1512; 1731 - 1738); and an electrically non-conductive sealing arrangement (1531, 1532) connected to the substrate (1520; 1720) to seal the substrate (1520; 1720) and the skin to prevent ingress of moisture to said at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) and to said at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758) at the connection to the respective electrode (1511, 1512; 1511, 1512; 1731 - 1738); CHARACTERISED BY: the substrate (1520; 1720) having a part annular, an annular or a crescent shape and the at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) having a part annular shape, the electrically non-conductive sealing arrangement comprising a strip of waterproof, electrically non-conducive gel being disposed around the edges of the at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) and over said at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758), said substrate (1520; 1720) shape having a convex side, wherein an area adjacent the electrode arrangement adjacent the a convex side of the substrate (1520; 1720) is not covered by the electrode arrangement (1500, 1500'). the substrate (1520; 1720) having a part annular, an annular or a crescent shape and the at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) having a part annular shape, the electrically non-conductive sealing arrangement comprising a strip of waterproof, electrically non-conducive gel being disposed around the edges of the at least one electrode (1511, 1512; 1511, 1512; 1731 - 1738) and over said at least one connector (1551, 1552; 1551', 1552'; 1751 - 1758), said substrate (1520; 1720) shape having a convex side, wherein an area adjacent the electrode arrangement adjacent the a convex side of the substrate (1520; 1720) is not covered by the electrode arrangement (1500, 1500').