You read about keeping calcium levels under 2% for large breed puppies. Which has me thinking, is it OK to give my 6 month old an antler bone to chew on? It is a bone which means its high in calcium. Just a little concerned on whether or not its OK. Maybe its a trivial amount so no need for concern? He has a nylabone but I just introduced him to an antler bone the other day and he LOVES it. The only downside is that its not lasting as long as I thought it would. They have such powerful jaws. Any advice would be appreciated!