Picture a dog on the sofa, chewing a prized bone, when a toddler toddles over and reaches for it. The dog gives a low, rumbling growl. The owner, mortified, scolds the dog — “No! Bad dog!” — and the growling stops. Problem solved? Not even close. What actually just happened is one of the most dangerous misunderstandings in the human–dog relationship: the owner punished the warning, not the fear behind it.
To see why, it helps to know that a dog facing something it dislikes doesn’t leap straight to teeth. It climbs a predictable staircase of escalating signals — the Canine Ladder of Aggression, devised by veterinary behaviourist Kendal Shepherd and published in the BSAVA Manual of Canine and Feline Behavioural Medicine. On the bottom rungs sit easily-missed appeasement and “calming” signals: blinking, yawning, nose-licking and lip-licking, turning the head away, a raised paw, walking off. Only when those polite requests for space are repeatedly ignored does the dog move up to a freeze, a stiff stare, and finally a growl, snarl, snap and bite. Crucially, these are not signs of a dog being “dominant” or “naughty” — they are a social animal’s attempts to defuse a threat and avoid conflict, and most clinical aggression is rooted in fear, not malice.
Here’s the truth: a healthy aggressive sequence has structure — a warning (the growl), a pause, and only then, if the threat continues, a bite, followed by release. WSAVA behaviour material describes how this sequence becomes abnormal and far more dangerous when steps get omitted — the dog that growls and bites simultaneously, or bites with no warning at all, has a corrupted warning system. And how does a warning system get corrupted? Most often, we break it ourselves. Each time a dog is punished for growling, it learns that the growl brings a bad outcome. The fear and the underlying motivation haven’t changed one bit — but the dog stops advertising them. You haven’t built a safer dog; you’ve built a quieter one that now skips the lower rungs and jumps to snapping, the so-called “silent biter.”
This is why suppressing warnings is the opposite of training. The American Veterinary Society of Animal Behavior (AVSAB), in its Position Statement on the Use of Punishment, warns that punishment-based approaches carry real risks: inhibition of learning, and increased fear-related and aggressive behaviour, alongside the obvious risk of injury. Its 2021 Humane Dog Training position statement goes further, concluding from the current evidence that reward-based methods should be the standard for all training and behaviour modification — aversive methods damage both animal welfare and the human–animal bond, with no evidence they are any more effective. In plain terms: punishing the growl doesn’t just fail to fix the problem, it can actively make the dog more dangerous and more frightened.
So what should happen instead? The 2015 AAHA Canine and Feline Behavior Management Guidelines frame behaviour problems as a genuine medical and welfare issue — they are a leading reason dogs are relinquished or euthanised, most often during social maturity at one to three years of age — and they steer clinicians firmly toward reward-based strategies: teaching an incompatible alternative behaviour, redirecting and removing the trigger, and managing the environment so the dog never needs to escalate. (Notably, the same guidelines warn against “flooding” — forcing an animal to endure something frightening — which can produce learned helplessness, a shut-down dog that has simply given up.) For a frightened dog guarding a bone, that means quietly removing the child rather than the growl, then working under behavioural guidance to change how the dog feels about people approaching its resources.
The biggest takeaway from this article: thank the dog for the growl. A growl is honest, generous communication — a dog telling you, in the clearest language it has, “I’m not okay with this, please give me space.” Listen to it, back off, and address the emotion underneath, and you keep a warning system that could one day prevent a bite to a child.
Punish it into silence, and you may never get a warning again.
References
- Shepherd K. The Canine Ladder of Aggression. In: BSAVA Manual of Canine and Feline Behavioural Medicine (1st ed. 2002; 2nd ed. 2010), BSAVA — the escalating sequence from subtle appeasement/calming signals through to overt aggression.
- AVSAB Position Statement: The Use of Punishment for Behavior Modification in Animals (American Veterinary Society of Animal Behavior) — punishment risks inhibition of learning and increased fear-related and aggressive behaviour.
- AVSAB Position Statement on Humane Dog Training (2021) — reward-based methods recommended for all training and behaviour modification; aversive methods harm welfare and the human–animal bond with no evidence of superior efficacy.
- 2015 AAHA Canine and Feline Behavior Management Guidelines (J Am Anim Hosp Assoc 2015;51:205–221) — behaviour problems as a leading cause of relinquishment/euthanasia; reward-based behaviour modification, teaching incompatible behaviours, and avoidance of flooding/learned helplessness.
- WSAVA behaviour proceedings — “Dog Aggression: Assessing the Risk” (VIN) — the normal warning–pause–bite–release sequence and how omitted warnings indicate an altered, more dangerous pattern.
- VIN / Veterinary Partner — Appeasement Behaviors — lip-licking, look-aways and raised paws as appeasement/calming signals indicating discomfort.