Nice tip, at almost the same time when I received your tip I was crawling the Petopia website to get a sort of ideal mix of pets for instances.

Any (more) help would be appriciated:

Bear (tanking)

Boar (Charge + fast agro)

Wolf (+50 AP for all in party) I will drop this one for the Gorilla because of patch 3.1 the AP is not party wide anymore

Ravager (2 secs stun)

When this group will hit the Outlands I will add a 5th Hunter who is too high level (66) now.

Eventually (Outland heroics?) I will add a Pally to this group (and drop a hunter) who will be a tank and healer (is that possible?) and give some nice aura + Kings buffing...

Cheerzzzzz for the tip

MC