Sensitive question but I am curious what people's opinions are. I imagine most folks here are dog owners without high stakes in the world of rescue and sheltering so I'd love to hear your perspectives! Obviously a behavior is only a problem in the context the dog is in. For example, a dog that bites people may not be a problem for a solitary rancher who wants a dog for property protection, but would be a major problem for a university student living in a dorm. So very generally speaking, what behaviors do you think are treatable, manageable, or are such that you believe a dog with X behaviors deserves a chance to be owned, or rehomed, or placed through a shelter? And what behaviors do you think make euthanasia the most humane, ethical, or responsible outcome for a dog?