If you plan to multi-class a DH then do not bother putting any points in the wolf part of the tree.
For the wolf to be of any use it needs all the levels it can get, which come for you ranger levels.
I stand by what I posted earlier. The wolf can be very helpful in the Heroic 1-20 R1-R4, After that it has diminishing returns.
If you are have trouble keeping it alive within those level ranges then something is amiss.
- First an foremost get some light armor (despite what the wiki says only light works) with the highest fortification and sheltering (PRR/MRR) you can get.
- Make sure the wolf is summoned when getting guild buffs so it gets them as well. If not in a guild or a newly started one get wands and scrolls to buff it. Don't forget buff you have from spells (resists, magic fang, stat boost like bears endurance, etc... They are not great but every bit helps.
- The wolf is not a tank so don't play it as one. Yes it can tank lower level quests but so can a wizard.
- The wolf does best went sneak attacking. Make sure you or someone else in the party hits first.
- As it levels it will get Wolf Rage, Hamstring and Takedown (trip). These can be pulled down to the wolf hotbar so you can activate or lit is use them on its own. This is more situational.