Note that you'll want pretty high quality armor, leather armor is good, plate is better.
Use Call Down The Thunder behind a sign to get about 25-30 initiative points, use Sidestep to get your combat advantage up to 3-5, use Sting Like a Bee or Consume the Flames to set the battle intensity to 0 then run away, out of the animal's range until your attack/move cooldown has finished, and then use Quell the Beast. Then you have to use Quell the Beast on the animal again when it tries to attack you whilst you're leading it around, eventually it'll turn into the domestic version of the animal and then the fun starts.