Use the target command instead of furiously mouse clicking all over the place trying to click on the corpse so you can loot it.
IE: You kill the Avatar of War and you want to loot some goodies on a different toon but the corpse is not visible, or when you click all you get for your target is pets or other pc's:
/tar cor
Since all corpses have the name "corpse" in their title, it will usually get the one you want. If not, you could always be more specific and type something like /tar avatar
Now that you have the corpse targeted just type /loot instead of right clicking to loot the corpse. You will still have to be in range to loot.
Use /tar corpse and /loot in conjuction with /hidecorpse looted for much less frustrating corpse cleanup
