Agreed on antlers. Pretty much anything else “natural” Lucky destroys within an hour and we’re paranoid about him swallowing sharp pieces–he’s yet to splinter an antler. (though he has managed to get some small pieces off occasionally, which is a bit worrying). They do lose their appeal eventually as they get hard and stone-like after a while. Sometimes I cover them with peanut butter to pique his interest again.
Kongs are great too of course. We keep a bunch of 'em filled with my wife’s healthy dog concoction in the freezer at all times.
