Ever wonder why your dog can usually cope… until suddenly they can’t? In this video I break down trigger stacking: when several stressors build up in a short amount of time and push a dog over their threshold, leading to a bigger reaction than you’d expect (or sometimes a shutdown). I use a very relatable human example first—one annoying thing after another—because it shows how the “final straw” isn’t really the whole story. Then I translate that to dogs: maybe the lawnmower, the vacuum, and being left alone are each manageable on their own, but stacked together they can tip the scales. I like to think of triggers as adding percentages toward a dog’s “bite threshold”—once you go beyond 100%, that’s where outbursts can happen. I also go through common (and often subtle) signs that stress is building, like panting, pacing, dilated pupils, tucked tail, head turns, and ears back. Finally, I share practical, force-free strategies: identify and log triggers, use desensitisation, create safe spaces, avoid piling multiple stressors together, and reinforce calm behaviour with positive reinforcement. The goal is simple: keep your dog under threshold, reduce overall stress, and support emotional wellbeing with humane, learning-science grounded training.