What is in this guide
A dog that bites has almost always said several other things first. The problem is that the earlier signals are quiet, easily missed, and frequently misread as the opposite of what they mean.
By the time a dog growls it has usually been asking to be left alone for some time. The growl is not the beginning of the sequence. It is close to the end of it.
This is the sequence, in the order it actually happens.
One note before it: this article describes behaviour, it does not treat it. A dog showing persistent stress signals, a sudden change in behaviour, or any aggression needs a veterinarian first, to rule out pain or illness, and then a qualified behaviourist. Sudden behaviour change in a previously settled dog is a medical question until a vet says otherwise.
Stage 1: The quiet signals almost everyone misses
These come first, often minutes before anything obvious. A dog showing these is asking for space.
Turning the head away. The most commonly missed signal there is. A dog turning its face away from something is declining the interaction. Children reading this as shyness will often lean in further, which escalates it.
Lip licking when there is no food. A quick tongue flick across the nose. Extremely common and almost universally missed.
Yawning when not tired. A stress yawn, usually in a situation that has nothing to do with sleep.
Freezing. Sudden stillness, particularly over food, a bone, a bed or a toy. Stillness is not calm. A dog that has stopped moving entirely is a dog that has made a decision about what happens next, and it is one of the most serious signals on this whole list precisely because it looks like nothing.
Whale eye. The whites of the eyes showing as a crescent, usually because the dog is holding its head still while looking sideways at something. Reliably indicates discomfort.
Moving away. A dog leaving a situation has communicated clearly and should be allowed to go. Following a dog that has walked away is how a large number of bites happen.
Stage 2: Clearer discomfort
If stage 1 was not respected, these follow.
Tucked tail, lowered body, ears flat back.
Panting when not hot and not exercised.
Shaking off as though wet, when dry. A stress release, usually right after something the dog found difficult.
Scratching or sniffing suddenly and apparently randomly, mid-interaction. A displacement behaviour, and a sign the dog is looking for a way out.
Hard staring. A fixed, unblinking look, often combined with stillness.
Showing teeth or wrinkling the muzzle.
Stage 3: Stop now
A growl. A growl is communication and it is valuable. Do not punish a growl. A dog punished for growling learns to skip it, which removes the last warning before a snap. The correct response to a growl is to stop what is happening and give the dog space.
A snap that does not connect. Deliberate, and a final warning. This is not a failed bite.
Lunging.
If you reach stage 3, the interaction ends. Not a correction, not a telling off. It ends, the dog gets space, and the situation that produced it does not get repeated until someone qualified has looked at it.
The three things everybody gets wrong
A wagging tail does not mean a happy dog. A tail wag means arousal, and arousal can be excitement, anxiety or conflict. The useful detail is how it is wagging: a loose, sweeping wag with a wiggling body is usually friendly, while a high, fast, stiff wag with a still body is not. Children are taught that wagging means friendly, and that teaching causes real harm.
A dog that rolls over is not always asking for a belly rub. It is sometimes an appeasement posture from a dog trying to defuse a situation. The difference is the rest of the body: loose and wiggly is an invitation, stiff and still with the head turned away is not.
A dog that “suddenly” bites almost never did. The sequence above was usually complete and simply not read. This matters because it means most incidents are preventable by people, not by dogs.
What a relaxed dog looks like
Worth knowing, because it is the baseline everything else is measured against.
Loose, curved body with no stiffness. Mouth slightly open, relaxed, sometimes with the tongue out. Ears in their neutral position for that dog. Tail in a neutral position, moving loosely if at all. Blinking normally. Weight evenly distributed rather than leaning forward or back.
Learn your own dog’s neutral. Breeds differ enormously in ear carriage, tail set and facial structure, and some breeds have physical features that make the standard signals harder to read: tightly curled tails, cropped or heavily furred ears, flat faces, heavy coats and dogs with very dark faces where the eyes are hard to see. With those dogs, the whole-body signals matter more than the facial ones.
Teaching children
Children are bitten more often than adults and usually in the face, usually by a dog they know, and usually during an interaction the child initiated. The framing that works with children is not a list of signals but a small number of rules.
Let the dog come to you. The single most useful rule. If the dog does not come over, it does not want to be patted.
No hugging, no lying on, no face-to-face. Dogs do not enjoy being hugged the way people assume and a face pressed against a dog’s face removes every avenue of retreat.
Leave a dog alone when it is eating, chewing, sleeping or in its bed.
If the dog walks away, it is finished. Do not follow.
Never disturb a dog that is unwell, injured or with puppies.
Ask the owner first, every time, with every dog.
Adults have to enforce these, because children cannot reliably read a dog and should not be expected to. Kids and dogs: teaching safe interaction goes through this properly.
Supervision that actually works
“Supervised” usually means an adult in the room looking at a phone, which is not supervision.
Real supervision is an adult watching the interaction, close enough to intervene, who will end it when the dog signals stage 1. Any child under about five with any dog needs an adult within arm’s reach.
Separation is a legitimate and underused tool. A baby gate, a crate the dog likes, or a closed door is not a failure of training. Most households with young children and a dog would benefit from more physical separation than they use, particularly at the times when both are tired, which is late afternoon.
When to get help
See a veterinarian for any sudden behaviour change, any new irritability, or any aggression that was not there before. Pain is a very common cause and dogs conceal it well.
See a qualified behaviourist or a veterinary behaviourist for established behaviour concerns. RSPCA Australia and the Australian Veterinary Association publish guidance on behaviour and on finding appropriate help.
Do not use aversive methods for fear or aggression. They suppress the warnings rather than changing how the dog feels, which makes the dog less predictable.
Next: how much exercise does my dog actually need covers one of the most common underlying causes of a stressed dog, dog barking at everything covers the most common complaint, and the new puppy checklist covers starting well.
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