How do I introduce two dogs that don't get on?

The case that supplies most of the procedure, because it is the only one in the corpus where two dogs from one household had to be got living together and the whole run-up is on film. The gates are counted off in advance and out loud: three things, then a fourth. One to three more relatively strong correction events, because this dog is so excitable and sometimes has a problem with his impulses. Full off-leash reliability, of which the recall is the primary part. A heel good enough that he can be called to the handler's side and walked at least thirty or forty seconds past dogs or distractions with the lead off. And the fourth is the other dog, who is not as far along, having started the programme over a week later as an addition to the first dog's plan - which is why the deliverable is the pair rather than each dog's obedience and why the slower dog sets the timeline. The decision to begin is then taken on breadth: progress all the way across the board, dogs seen without reacting, sit, down and heel all good at once. The first shared walk is parallel and non-contact by design, nose to nose is refused out loud, and the venue is chosen so the worst case can be contained rather than avoided. The most honest moment is the trainer thinking aloud about adjacent kennels and rejecting his own idea because it might ramp them up towards each other instead.

The case where the unit of assessment turns out to be the household rather than the dog, and where the business acted on that before the programme started. The reported reactivity could not be reproduced with the dog alone - the trainer says he saw them at the park with another dog and she did nothing - and his account of where it comes from is the pair: walking the two of them together, the excitable one gets excited, she cannot place the excitement and it comes out as arousal of her own. So the family, who had planned to send her by herself, were told to send both, and an owner recounts the advice with Christian named as the person who gave it. The risk of doing that is stated in the same conversation rather than glossed - if the other one winds her up, that could be a problem - and another household is given as the example. What follows from all of it is the reading that makes the family's report and the trainer's failure to reproduce it consistent with each other: what they were seeing was nervousness plus restraint, amplified by the second dog, rather than aggression.

The case that shows what a board-and-train cannot reach. The owners supply the diagnostic themselves and the trainer takes it on the spot: whether she stops is decided by the other dog rather than by her. A clean, confident signal ends it instantly; the dogs that scream and behave like victims do not - and the trainer's own observation from the first lesson matches it, that the two dogs she has injured are the most meek and submissive in the house. That turns a dog-aggression case into an arousal-plus-feedback case and it is the reason the trainer revises his own estimate of the severity downwards in front of them. Then the half nobody can train. The other dogs carry their own memory of what happened: one of them growls at the returning dog's handler, and the instruction is simply that the household will have to be around that. And the limit is stated plainly in the same passage - he can do all the training in the world, and if another dog comes over and starts on her, that is outside it. The same session names the ordinary problem of a return, which is that dogs come home and everything comes back at once, which is why he wanted to see her standard the moment he walked in.

The case that states the variable most cleanly, and the reason a dedicated tester exists at all. How serious an incident becomes is only partly a property of the dog being assessed: it depends on what the other dog does at that point, and if the other dog reacts by coming after him it would be a fight. A dog who shows a lot of submissive body language probably does not turn it into one - though the trainer adds that it is still not good. Read against Dutchess's household, where the dogs who screamed did not stop anything and the dogs who gave a clean signal did, the two cases say the same thing from opposite directions. The practical consequence in his case is that the encounter is staged with the business's own stable dog rather than with whatever turns up, and the correction is sequenced so that it never lands while he is still engaged - because a correction delivered in that position can be attributed to the other dog and becomes an escalation.

Whether to engineer proximity between two dogs who do not get on, or to keep it away from them.

The same handler, minutes apart, and he does not remark on it - which is probably because the distinction he is drawing is between supervised exposure and unsupervised exposure rather than between more and less. But as stated they are two different instincts about the same problem, and the second one is the more interesting because it is a trainer declining an intervention on the grounds that he does not know whether it helps. Nothing resolves it, and the kennels were not tried.

What decides that a dog is ready.

Not necessarily inconsistent - the second may simply be the moment the first list was judged complete - but they are two different decision rules and only one of them can be audited. The list has numbers in it and could be checked off; 'across the board' is a handler's read. Nothing in the corpus records the gates being ticked one by one, so whether the list governed the decision or described an intention is not recoverable.

Whose behaviour is the case about.

Both are stated by the business, in different cases, and neither is qualified. It is the conflict with the largest consequence for what a family is buying: a programme that trains one dog and a problem that lives in a set of relationships are not the same object. The nearest thing to a resolution anywhere in the corpus is in another case, where the household was advised to send both dogs - which treats the pair as the unit - and even there the risk of the second dog winding the first one up is named rather than solved.

Whether a second dog in the programme helps or complicates.

Stated together rather than against each other, which is the honest version - but the two have opposite commercial and scheduling consequences, and in one case the extension happened. Left open.

How do I introduce two dogs that have already fought?

You do not start with an introduction. The corpus's first step is proximity with contact deliberately withheld: two handlers, two leads, and a ten to fifteen minute walk in which the dogs are near each other and are not allowed to interact, because being around each other is the exercise at this point. Nose to nose is refused out loud as a later step. The same handler applies the same shape to a reactive dog's first meeting with any dog - a known, stable animal met ambiently on a shared walk, nothing required, and contact allowed only when the dog offers something calm. And the refusal is spoken before anything goes wrong rather than after: he is not ready for that. If you take one thing from this page, it is that the meeting is a late step and proximity is the early one.

How do I know we are ready to try?

The corpus's answer is a list you can write down, and it is worth copying. Asked what full integration needs, the trainer counts three things and then adds a fourth. A small number of strong correction events already landed - one, maybe two or three, because this dog is excitable and sometimes struggles with his impulses. Full off-leash reliability, of which the recall is the primary component. A heel good enough that the dog can be called to the handler's side and walked at least thirty or forty seconds past dogs or distractions with the lead off. And then the other dog's own training, which in that case was over a week behind. Note what all of those have in common: they are things the handler can use in the moment it goes wrong. The gate is not about how the dogs feel about each other; it is about whether you can end an incident before it becomes one.

Where should the first attempt happen - at home, where they will be living?

No. The corpus stages it away from home on purpose, and the reason is containment rather than calm: you have to try it, and if it happens at home it could be a big disaster, whereas here the disaster can be mitigated. That is a different logic from choosing somewhere quiet. It also explains why a session that looks alarming on video is the safer option - the alternative is not that nothing happens, it is that the first time happens in your kitchen with nobody there to help. The same trainer is notably cautious about the kind of exposure he cannot supervise: he considered kennelling the two dogs where they could see each other across a small gap and rejected his own idea, because he was not sure whether it would help or would ramp them up towards each other.

If it goes wrong, is that my dog's fault?

Partly, and the corpus is unusually clear that the rest belongs to the other animal. How serious an incident becomes depends on what the other dog does at that point: if the other dog reacts by coming after him, it would be a fight; if it shows a lot of submissive body language it probably will not, though the trainer says that is still not good. From a different household, the same finding arrives from the family's own years of watching: she stops when a dog gives her a clean, confident signal, and she does not stop with the ones who scream and act like victims - and the trainer's own observation is that the two dogs she has injured are the most meek and submissive in the house. So a meeting is a measurement of your dog only to the extent that the other dog was a known quantity. That is why the business keeps a dog specifically for testing.

My other dogs have changed towards her since the incident. Will the training fix that?

No, and you should be told that plainly, as this family were. The other dogs carry their own association with what happened - one of them growls at the returning dog's handler - and the instruction is simply that the household is going to have to be around that. The trainer then names the edge of his own remit in the same passage: he can do all the training in the world, and a dog coming over and starting on her is outside it. He also warns about the shape of a homecoming generally, which is that dogs come back and everything goes up at once, all the old problems return, and the whole household has to be re-settled - which is why he wanted to see her standard the moment he walked through the door rather than after everyone had calmed down.

Should I send both of my dogs to training, or just the one with the problem?

In the corpus's clearest case the family were told to send both, and the reason was that the problem lived in the pair. Alone at a park the nervous dog did nothing at all; walking the two of them together, the excitable one got excited, she could not place the excitement, and it came out as arousal of her own. So the unit being assessed was the household rather than the dog, and the business said so before the programme rather than afterwards. The risk of sending a pair is named in the same conversation and is not glossed over - if one winds the other up, that is a problem - and in a different case a second dog folded into the first dog's plan meant the slower dog set the timeline for both and the programme ran longer. Both of those are true, and which one applies to you is a question about your two specific dogs.

Introducing them. The corpus's first step is explicitly not a greeting: walk them near each other and do not let them interact, because being around each other is the exercise at this stage.

Doing the first real attempt at home. The corpus deliberately stages it somewhere the consequences can be contained, precisely so that the first time is not in the house.

Testing with whatever dog is available. How bad it gets depends on what the other dog does, so a stranger's dog turns the attempt into a gamble whose result cannot be attributed to your dog.

Expecting the returning dog's training to fix the other dogs' behaviour. They have their own memory of what happened, one of them may growl, and the family are told they will simply have to be around that.

Correcting the dog while he is still engaged with the other dog, which can be attributed to that dog and turns the correction into an escalation.

Blaming the dog for what the pair produces. In one case the reactivity could not be reproduced with the dog on her own, and the mechanism was the excitable second dog transmitting arousal she could not place.

Assuming the homecoming is the easy part. Dogs come back and everything goes up at once - jumping, chaos, all the old problems - which is why the trainer wanted to see the standard the moment he walked in.

You have two dogs at home and you have been rotating them - separate rooms, separate garden times, a rota.

She is fine with dogs in general, and the incidents have all been with the dogs she lives with.

One of your other dogs has changed towards her since it happened - growls, avoids, watches her.

It only happens when you walk both of yours together, and never when you walk her on her own.

You have tried a face-to-face introduction, more than once, because that is what everybody says to do.

The two of them have never met except through a gate or a fence, and it has never gone well.