Can't remember which poster it is. My brother rescued this dog from a shelter. Did a DNA test and he is 50% Great Dane, 25% boxer, 12.5% German Shepherd, and 12.5% unknown mix of breeds. He looks more like a black lab than anything. He is an awesome dog and they don't want to get rid of him, but he has bitten 2 female adult guests in a month already. Was scary, I witnessed one of them. There would seem to be abuse by a female in his past, because it makes no sense. His wife will not let them keep the dog, but I may take him, since I am single. My question is, is this curable through training? Also, he shits in the house, and even in his cage. He's about a year old, just a great playful dog and so nice to the family and to me. Can this dog be trained to be an ideal dog, and all this stuff trained out of him?