A very similar thing happened to me: I got Nanuk affectionately called Nooky, before I was married in 1988. After we got married in 1990 we added a german shepard female, Bandit. Nooky hated the dh but loved everyone else. Bandit was a warm gentle shepard who fell out of a moving vehicle, and consequently we could never get her near a car so she was not fixed. You just can't make a 90 pound dog get into a car when they don't want to. Anyway, she had 2 litters of pups which we gave away. She died when hit by a semi 3 years ago. Nooky mourned and cried. A friend of mine realized she had Bandit's granddaughter and gave her to me. Sasha was a mixed breed dog, shepard, and what appeared to be chow. While i was at work one day, sasha attacked nooky and killed him. I was devastated. I didn't even blink though in putting sasha down. with three kids, i wouldn't take that chance. i cried like a baby over nooky, he had nursed me to health from near death once, kept my feet warm at night, screened my dates, listened and watched for danger, and was my one of my best friends. I think sometimes maybe pets are angels with fur..I'm tearing up as I'm writing this...sorry