This video covers the Taming the Beast quest chain from the point just just before Thotar provides you with a taming Rod to get a Dire Mottled Boar in Razor Hill. Thotar will give you a number of three taming rods, each is different and will allow you tame beasts in the next order: Dire Mottled Boar, Surf Crawler and eventually an Armored Scorpid.

After getting finished the taming part of The hunt this page chain, you will have to head to Orgrimmar and talk to Ormak Grimshot within the Valley of Honor in order to unlock your pet managing abilities: Tame Beast; Feed Pet; Revive Pet; and Source Beast Training.

Eventually, don't forget to visit the Pet Trainer my response and get the Pet capabilities that you will have to give to your companion pet.