They lick and eat everything! Their ass, their junk, other dogs' asses, other dogs' junk, vomit of all kinds, poop of all kinds, dead animal (just lick, not eat), toilet water, old gross leftovers from the fridge (I don't give my dog moldy food, but my grandmother does. Her dogs are in bad health, diabetic, and are about 10-20 pounds overweight. Poor guys.), and all sorts of other stuff! It's so gross!
They sniff a lot that you listed, but they don't eat/lick them.