Beastlord
If the dragon aims the Fireblast at you (the cone is much larger than the animation makes you believe it is), you can deterrence which prevents you from receiving more than 1 stack - 0 if you are fast).
The wolf howls periodically with
http://www.wowhead.com/spell=155198 , which increases Attack Speed of himself and friendlies around him. You can use Tranq Shot to get rid of it. On Mythic, you will also have to dispel the boss once he dismounts at 40%. That will happen twice before the wolf is down. If you are assigned to do the dispel, volunteer to take care of the boss. Following macro helps with this:
This way, you can keep the wolf targeted and just press one button to dispel the boss without any manual target switching. By the way, Glyph of Tranquilizing Shot helps you to save 40 focus as well.