The dog was always jealous of our daughter but had never been aggressive toward her. Until she was. I consulted a dog trainer who advised me to put her down. He said a dog who would bite a baby without provocation couldn't ever be trusted around small children again.How unfortunate about the dog biting your child, @StarSong! This reminds me that a dog, like a human, may suddenly become confused or "snap" however rare it is in a breed engineered for gentleness. They, like us, are all predators after all.
Interesting about Duke. I guess that boy is just a sweet, fickle wanderer at heart.
We were the ones who had Duke fixed and he was at least 4-5 years old at the time. He wandered to the factory, to us, and then to the gent a few streets over. As far as I could tell that remained his final home. We'd see them walking now and then through the years.