Well this is dependant on having a quest but maybe some people will make use of this
There's a quest as alliance
Lupus Pupus - Quest - World of Warcraft
The mob
Oil-stained Wolf - NPC - World of Warcraft
What you have to do in that quest is use an item on a wolf, and it's going to pretty much take a dump and disappear, but if you feel like just grinding away a bit without losing any hp or having to move, then
You throw the item at the wolf, and while its coming to the meat and then taking a dump, you start attacking it. There's about a 15 second window before it disappears, but its more than enough time for me to kill that Oil-stained Wolf
They still give you full experience and whatever loot they drop, and also skin them if you happen to be a skinner. You can just sit and throw the meats away without looting their crap.
You can also start attacking them, and throw the meat halfway through killing them and they will turn yellow again, without going back to full hp, and not attack you (if you are ranged or just dont want to wait for the cd or w/e)
The main drawback is that there's a cooldown on the item of 15 seconds before you can use it again, so that's the main time bottleneck right there
Hope someone can make use of this, not that non aoe grinding is even good anymore, just something i found while leveling~