Don’t buy antlers for your dog to chew on. Even if the package says these antlers come from wild deer who dropped them in the forest. In the national parks of Canada, the removal of shed antlers is an offense punishable by a maximum fine of $25,000 CAD. This is because removing shed antlers can deprive small animals of a valuable nutrient source.
Discarded antlers represent a source of calcium, phosphorus and other minerals and are often gnawed upon by small animals, including squirrels, porcupines, rabbits and mice. This is more common among animals inhabiting regions where the soil is deficient in these minerals. Antlers shed in oak forest inhabited by squirrels are rapidly chewed to pieces by them.
Everything in nature has a purpose and serves to keep the entire ecosystem in balance. Antlers are an important part of forest ecology. Get your dog a tasty free-range butcher’s bone if possible instead.
p.s. Rawhides are no good either, because dogs swallow the rawhide pieces whole and they can ruin their stomachs attempting to digest the tough material. My aunt’s dog died early because of rawhide ingestion- he could only eat boiled white rice and hamburger towards the end of his life because his stomach couldn’t handle anything else- due to consumption of rawhides.