Certain subs and JA's if utilized correctly can make your pet a very effective tank, even in parties. Examples I've used in the past are bst/war with provoke > snarl, or if you wanna add some damage, bst/thf with SA Rampage > snarl. There are all kinds of little tricks you can use to manipulate enmity onto your pet, it just all depends on what's viable in your particular setup.