My dad's dog will smell and lick the p00p of other animals, and perhaps roll around in it, but not eat it.
Otherwise, I've never seen him eat anything out of the ordinary. (No underwear or tissues.) He's pretty much only interested in what my dad eats, and he usually gets what my dad eats in some form or fashion.
My dad will buy a whole chicken for example, and since he does not eat white meat, the dog gets that. If he makes duck pasta, the dog gets the duck skin. If he grills trout, the dog gets trout too. If he makes Cordon Bleu, he gets that too. I sware, he eats better than most people on this planet. The again, he is our spoiled, know-it-all Münsterlander from Hannover, Germany. There are only some 300 of his breed in the United States.