this isnt anything to get a omgwtfpwn hunter pet, its just somthing that i find helps an exponentialy large amount all around,
Basicly, when you fein with your pet out, mobs will all swap to your pet, it fights and dies, slows you down rezzing it and keeping it happy,
the Trick is, after feining set your pet to passive, or if it already is on passive click passive again, youl exit combat, well duh i hear some of you saying, of course fein takes you out of combat, but actualy usualy it keeps you in combat till your pet dies or kills its target, your not on the threat list of the mobs but your still in combat, if you fein set the pet to passive and then mount, your out of combat and you avoid needing to rez your pet,
also i find in arenas, feining pet to passive then sending it back in quickly while you eat or drink works quite well as well as preventing your pets target from doing the same,