What does over threshold mean in dog training?

Over threshold means a trigger — another dog too close, or time alone stretching too long — has passed the point where your dog can still think. Under threshold he can take a treat, hear his name, and choose a different behaviour. Over threshold none of that reaches him, because his brain has switched into a state built for reacting, not deciding.

How do I know if my dog is over threshold?

Try the 60-second test: offer a treat he'd normally take without thinking, then try for two seconds of attention. If he takes the treat calmly and looks at you, he's under threshold. If he refuses or snatches the treat and can't respond, watch his body for three seconds — locked, frozen, hard-staring, or tucked means he's over it, and the fix right now is more space or less time, not more training.

ThresholdDogunder · over · back under

The one idea everything else here hangs off

What does it mean when a dog is over threshold, and how do you check it in 60 seconds?

Under threshold, your dog can still think — take a treat, hear his name, choose a different behaviour. Over threshold, he can’t, and no amount of training changes that until you add distance or time. Below is the 60-second test that tells you which one you’re looking at, today, on your own street or at your own front door.

Same idea, two problems

What is a threshold, in plain language?

A threshold is the point where your dog stops being able to think. For a reactive dog it’s a distance — how close another dog can get before he comes apart. For a dog with separation anxiety it’s a duration — how long he can be alone before he comes apart. Different units, same shape: a point on a scale, with workable room on one side of it.

Both diagrams read the same way on purpose. The axis is difficulty, not raw feet or raw minutes — plotted in their own units, progress for the two problems runs in opposite directions, but plotted as difficulty, both say the same thing: everything left of the marker is workable, and the whole job is moving that marker to the right.

Do this now, not later

How do you know if your dog is over threshold?

You don’t need a trainer in the room to check this. It takes about a minute, and it works whether the trigger closing in is another dog or the sound of your keys before you leave.

Step 1
Notice the trigger. Another dog is closing the distance, or you’ve just picked up your keys, put on your shoes, or moved toward the door.
Step 2
Offer a treat he’d normally take without thinking — something soft and high value, not a biscuit he has to work for.
Step 3
Try for two seconds of his attention. Say his name, or a cue he knows well, once.
Step 4
Watch his body for three seconds. Still and loose is one thing; locked, frozen, hard staring, or tucked is another.
Step 5 — read it
Took the treat calmly, responded within a couple of seconds, body loose: he’s under threshold. Refused or snatched the treat, no response, body locked or frozen: he’s over threshold. If he’s over it, the fix right now is more space or less time, not more training — back away, or end the exposure, before you ask for anything else.

Food refusal, explained

Why does my dog not take treats on walks?

Refusing food is one of the clearest over-threshold signals there is, and it usually shows up before the bark or the lunge — which is exactly why it’s the moment worth watching.

A dog whose stress response has taken over stops prioritising things like eating, because that state is built for reacting to a threat, not for digesting. Refusing a treat outright, or grabbing it too fast and too hard, are both versions of the same signal. They arrive seconds before the reaction you actually notice, which is why the bark is already too late to catch a threshold at.

Under vs over

What does the result actually mean?

Under threshold is where training happens — he can still learn, still choose, still hear you. Over threshold is not stubbornness and not a training failure; it’s a state his brain is built to enter, and almost nothing you ask for in it will land.

This is also why a dog can be fine one day and fall apart the next at what looks like the same trigger. Stress from earlier in the day — a vet visit, a loud storm, a missed walk — can stack up and lower how much it takes to tip him over threshold later. That isn’t inconsistency on his part; it’s the same threshold, met by a dog who started the day closer to it than usual.

If your dog is over threshold most of the time no matter how much space or time you give him, or there’s a bite history involved, that’s a conversation for a vet or a veterinary behaviourist, not something a self-test at home can settle.

The mistake almost everyone makes

Why does training over threshold fail?

Because the part of the training that’s supposed to happen — noticing, choosing, learning — is the exact part that isn’t available above the line. Repeating a cue louder, or running through a rep anyway because you’re already outside, doesn’t get through; it mostly rehearses the reaction instead.

The management move — adding distance, or shortening the absence, before asking for anything — always comes first for this reason. It doesn’t feel like progress, and it isn’t meant to. It’s what keeps every session you do run below the line where the actual training can work.

Common questions

What does over threshold mean in dog training?: Over threshold means a trigger — another dog too close, or time alone stretching too long — has passed the point where your dog can still think. Under threshold he can take a treat, hear his name, and choose a different behaviour. Over threshold none of that reaches him, because his brain has switched into a state built for reacting, not deciding.
How do I know if my dog is over threshold?: Try the 60-second test: offer a treat he'd normally take without thinking, then try for two seconds of attention. If he takes the treat calmly and looks at you, he's under threshold. If he refuses or snatches the treat and can't respond, watch his body for three seconds — locked, frozen, hard-staring, or tucked means he's over it, and the fix right now is more space or less time, not more training.
Why does my dog not take treats on walks?: Refusing food is one of the clearest over-threshold signals there is. A dog whose stress response has taken over stops prioritising things like eating, because that state is built for reacting to a threat, not digesting. Refusing a treat, or grabbing it too fast and too hard, both show up seconds before a bark or a lunge — which is why they're the moment worth watching, not the reaction itself.

Find your dog’s actual threshold, not just today’s reading.

The 60-second test tells you under or over, right now. The free read goes further: twelve questions, the pattern they point at, a confidence level, and the three things most likely making it worse.

Start the free read