This video handles the Taming the Beast quest chain from the point just before Thotar gives you a taming Rod for your Dire Mottled Boar in Razor Hill. Thotar will provide you with a number of 3 taming rods, every one is different and lets you tame beasts in the following order: Dire Mottled Boar, Surf Crawler and at last an Armored Scorpid.

When you have done the taming Section of The search chain, you need to head to Orgrimmar and talk to Ormak Grimshot within the Valley of Honor so that you can unlock your companion pet handling skills: Tame Beast; Feed Pet; Revive Pet; and Beast Training.

Finally, don't taming rod wow classic forget to go to the Pet Trainer and get the Pet capabilities that you must give to your pet.