Use the Taming Rod to tame an Armored Scorpid. Practice your skills, then return to Thotar at Razor Hill.
The final creature you need to tame is one you should strive to emulate; the armored scorpid. It strikes quickly and confidently; to control a force such as this is your fate as a hunter.
When you return, I will bestow you with the skills you will need to tame an animal of your choosing; this creature will be yours to command. Under your control, your pet will gain experience alongside you. I will also show you how to call it and dismiss it as you wish.