Smell is always a clue, even with generally 'edible' animals. I've generally taken some bear meat. But I have never had any qualms about leaving it all either - and my ethic has long included the idea than some would be eaten. But I don't have any inclination to freshly recycle well-aged beach kills or rank salmon. As I stated earlier in this thread, one carcass we left in it's entirety but for the head and hide...was completely cleaned up...gone, in less than 2 weeks.
