Frenzy Boar

The Frenzy Boar is found on the first floor of SAO in the fields just outside of the Starting City. At only Level 1, it is the weakest of all enemy monsters and can be killed easily with one precise blow, although it must first be provoked by the player for it to attack. When Klein first met Kirito, he begged him to show him the basics of SAO, so Kirito took him outside to the starting fields and tought him the attack basics by fighting these creatures.