My friend showed me this trick on Tatooine with Dewbacks. Here's how you do the trick:

Find a Dewback nest, and make sure you have like a rock beetle near by it. Position yourself behin the rock beetle so that the beetle is inbetween you and the Dewback. Shoot at the Dewback and if done correctly, the Dewback will charge and attack the Beetle, not you! Now, run back a few steps while it attacks the Beetle and finish off the Dewback. Great xp!

I hear this trick also works on other planets:

On Talus put a Kima in between you and your target and shoot.

On Dathomir put a Purbole in between you and your target and shoot. (Note: the Purbole may aggro you afterwards, so be careful with that one)

^^Those are some of the recorded tactics people use. There's many more, all you have to do is learn which creatures hate eachother, then just put them in the middle of you and your target and you got yourself a nice shield! Tell me how it works and GOOD LUCK!