I have had him since an 11 week old puppy. He is currently 7 (born may 27th). He has recently become aggressive with my wife's children and both have been bitten. We are expecting a newborn. We tried segregating him from the children, then letting him slowly integrate. This has not worked and he is going to need a new home. Or he is going to have to be surrendered. He currently lives on a fence 3 acre estate. He has a heart murmur and has had surgery on his right leg for a tumor in the past. It breaks my heart but it definitely has to be resolved immediately.