Disclaimer: If this is a repost, then i apologize in advance.
An interesting site that I found when i played my hunter
Petopia: A visual guide to hunter pets in the World of Warcraft!
it has every combat-oriented pet in the game, as well as all pet abilities, the levels required for each, locations, and more importantly weather a certain pet is a caster type or not. Hopefully with the information provided by this site there will be no more 70 hunters trying to raid with a caster pet just because they think it looks cool:yuck:. (one i know was BM spec and always bitched that his pet died easily, on the site it explains why caster pets are weaker)
Just thought I'd share this with you all.