Two pets for Bordagar;
Owl (Solo & Group): trained in Natural Armor Rank 11, Cobra Reflex (assumed to give approx 11%? increase to pet DpS), Great Stam 4?5?, and that AoE 50% redux thing Rank 2.
Solo - I like how Mend Pet scales with Natural Armor. Greater Stamina has only resulted in down time between pulls for me while soloing, in contrast Natural Armor I never need a break between pulls to heal my pet. Granted, with G.Stam the downtime is only a few seconds while waiting for Mend Pet to catch up to Max pet health, and only occurs about every 5 pulls.. It's still like 10 seconds out of every minute wasted on downtime that I rather would not have while soloing. Yes, I know this isn't a game breaking conclusion nor all encompassing, but it is my prerogative.
Group - Since my owl's primary function is to Screech in support of the tank, I make it a tanker-tool. You see, it builds enough aggro while keeping the AP debuff going that it serves as a speedbump in between the mob and [:random:] clothie. As stated in other posts, I leave growl on and never have problems with stealing the tank's aggro (unless they wants my pet to tank for a second). Our tanks have adapted to understand how to watch and utilize the pet threat in their own task of tanking multiple targets, and often use the pet-threat as a means to "ease off" aggro on one mob to build stronger aggro on another, allowing the pet to possibly even tank for 2-3 hits before slapping out sunders to regain aggro.. yeah I could go on and on. *sigh* I get so defensive! /pun
Woof (group): trained in Greater Stam Rank 11, Resists according to my current instanced focus, and that AoE resist 50% thing rank 2.
Group - In the event that the tank doesn't want or need the owl 'option' to help their tanking, I select the woof. Although Furious Howl isn't a huge benefit, it's pretty worry free. It's not going to cause unnecessary aggro, so the pet probably won't be getting hit (exception: Intimidation). Better off just helping to buff the tank's DpS every so often and if you have any other melee DpS.. yeah.
My advice? Have a pet for grouping, a pet for soloing that can serve a group function, and should you PvP use your third slot for a PvP pet.
Personally I have 1 lifetime HK which shows you how much I PvP. You have to do something pretty dumb to get me involved in an item based PvP game. lol