Can't tame Tyrant Devilsaur?

Hey guys! I'm a level 62 Blood Elf Hunter, I made sure to put away my pet in a different stable slot before coming back to Un'Goro Crater and trying to tame the exotic Tyrant Devilsaur, however when I try to tame him I get the message 'invalid target'?
I even tried fighting him and getting him to low HP, I got him to around 600 and tried then but still the same message.
What am I missing here?

You need BM talents to be able to tame him.

Ohhh gotcha, thanks for the help :)

The last talent in the beastmastery tree makes you able to tame exotic pets.