Mars

...the particular indicator of the tendencies associated with this planet is the hostility exhibited in paroxysms of infantile rage occurring during teething and in the earliest attempts at muscular co-ordination and walking. These are the opening shots in the battle of life, fought tooth and claw in a dangerous world of falls and collisions, cuts and scratches and bumps, whinings and disobedience. It continues through all the competition, rivalry and enmities aroused by the need to earn a living, clutch at status and defend interests won, giving one's all to satisfy longings and urges at whatever risk. (from The Dictionary of Symbols by Jean Chevalier)