Sadly for a Marksman PvE hunter there is NO other choice then to go for the wolf pet. Not that the wolves aren't nice pets, but part of being hunter is about the pets and having no liberty to choose from several good options is one of the downsides of the MM hunter raiding spec.
Now this may sound a bit negative but the main reason we do not have a choice is because the wolf is just too damn good! His ability is by far the best in game.
Effectively it has a 50% uptime, 20seconds up 20 seconds down.
Wolves can be found allover the realm so i suggest searching in Wowhead for info (make sure to search in correct expansion/patch)
For your pet talents i suggest:
The only alternative options you would have is to put 1 pt in great stamina instead of dash in the first row and then take 1pt Boar's speed for some 30% pet movement speed at all times, dropping Bloodthirsty so you will have to feed it more to keep him/her happy and he will lack self-heal. For this reason i kept Bloodthirsty as a dead pet does no dps.
About pets:
All pets from the ferocity family will do the SAME dps, choosing your pet is ALL about the ability it gives, nothing more nothing less!
For PvP there will be more options and more families to choose from, for a raiding hunter it's ALL about dps as there is no pet ability that is not removed by other class buffs. (a wasp is not a good raiding pet)
