Dark LegacyFighting with your pet.
To start a fight you can command your pet to attack with the 'order' command. For example: 'order <pet> face <enemy>'.
If your pet starts fighting out of its own, it is probably remembering an earlier fight. You can tell it to stand down by typing 'pet peace'. This prevents the pet from re-attacking a mobile after re-encountering it after a fight. Note that this does /not/ clear the hate the enemy has for the pet.
The game also finds it under: pet_combat, pet_fighting, pet_hate, pet combat, pet fighting, pet hate.