So I have been calling around in my local area trying to find Bandit and Morgen bones that are maybe a little more durable... Called around asking for marrow bones.... Not sure what animal it comes from that are good for large dogs..... Yet I found one place that says they have deer bones. That people come get those for their dogs... Are deer bones durable and good for large German Shepherds?? I know nothing about specific bone types..... I would really like to find them something good to chew on. They love these bones I buy from our local pet store but they chew them all up into pieces lately and they only last a day.... Someone please point me in the right direction with this.