Your dog doesn’t “snap out of nowhere.” More often, the warning signs have been rehearsed for months: guarding the couch, blowing off cues, refusing the crate, pushing into space, growling to get its way, then escalating to a bite when the human finally draws a line. We sit down with Angela, a trainer with a decade of hands-on experience, to talk about healthy boundaries that keep dogs safe and keep owners from getting bullied in their own homes. We dig into the hard stuff dog owners and dog...