Easiest way to solo tame it, is probably to let one of your tames tank while you whale on it. Safest, is to use a stone taming pen. These guys are great, I on,y have lvl 80's, but I have five. Melt brontos in seconds.
Make a little trap carry with argy ( it can still attack your argy so give it high health ) then drop in a trap.
No need to worry about the pack just pick the leader or the one you want.
Once you have three you get a pack bonus and a leader bonus for highest level wolf