Well, I have a 74 Hunter now, and I have a few questions.

1)What spec is best for PvE, I have heard lots of different things.
2)What is a good PvE rotation for the best spec.
3)What NON Beast Mastery hunter pet is BEST for DPS in 5 Mans (Specific ones?)

10 Points to best answer.

Thanks!

i know this isnt the answer ur looking for..but to be honest it really doesnt matter which spec/pet u use in 5 mans until 85

the the lvl 74 dungeons r pretty easy and u shud be fine pulling dps


if u still want to know which spec is best u can look on Elitistjerks.com ( a really good wow website )

also! DO NOT waste ur time finding some rare pet at lvl 74! use ur time to lvl 85

hunters r beast at 85.

Marksmanship

Rotation: Serpent Sting -> Chimaera Shot -> Steady Shot -> Steady Shot -> Aimed Shot -> Steady Shot -> Steady Shot -> Aimed Shot -> Chimaera Shot or 2 steadys

use arcane shot when u need to move alot

i use Ashtail he is a rare spawn fox in loch modan its a one hour respawn

To answer you first question, the best PvE spec can be any spec, marksman, beast mastery or survival. It's all up to which style you feel most comfortable playing. If you like laying out traps and such, survival is nice, or if you prefer to nuke your enemies with shots, markmanship is awesome. The spec i play love to play in for PvE is marksman because it's simple to use.
To answer your second question, The rotation for MM hunters goes as follows:
We no longer have any kind of fixed MM rotation, instead firing our shots in a priority system and making decisions as we play about whether to save up focus for the MM signature shot, or to burn focus before it caps out.
And thirdly, any cat/wolf pet is fine for dps. Such as the the little blue dog in the borean tundra.

Well that's all, hope i helped!