Wagging the tail is the most characteristic and universal behaviour among dogs. It does not always mean satisfaction; it also is an indication of its mood or rank. The higher the tail is lifted, the more confident the dog feels; the lower the tail the more submissiveness it shows.
• relaxed tail, enthusiastic movements – friendly attitude, satisfaction;
• intense movements, including the hindquarters – submission;
• stiff tail held at the back line, slow movements – anger;
• lowered tail, stiff movements – restlessness, desire to gain the favour of another individual;
• tail tucked between hind legs – fear;
• tail held 45 degrees below the back line or slightly above – interest and attention.