Write down what happened, not what you think it meant
A behaviorist preparing for a first consultation needs observations, not verdicts. For every strong reaction on a walk, note the trigger as precisely as you can: not simply another dog, but a large black dog off lead, approaching head-on, at roughly the length of two parked cars away. Record what your dog did in plain, visible terms — froze, barked and lunged, tucked her tail and pulled for home, or stared hard and could not take a treat. Finish with how long she took to settle once the trigger passed: seconds, several minutes, or not until you were back indoors.
Resist editing your entries into a story about her character. Writing that she was aggressive again tells a professional almost nothing, while writing that she barked at a cyclist who came up silently behind her at dusk gives them a mechanism to work with. Facts can be reinterpreted later; impressions harden into labels that follow a dog unfairly.
Capture the context around each reaction
The same trigger can produce very different behavior depending on what surrounds it, so log the setting as faithfully as the event. Note the time of day, the route, whether the path was narrow or open, and anything that had already raised her arousal: an earlier fright, a long wait at a busy crossing, pain you suspect from a stiff gait that morning. Record your own response too — tightened lead, crossed the road, kept walking — because a behaviorist will want to know which of your reactions helped her recover and which accidentally fed the moment.
Patterns usually live in this context layer. Owners often discover, once a fortnight of entries sits side by side, that reactions cluster on one narrow lane, late in long walks when she is tired, or only when triggers appear suddenly at close range rather than at a distance. That is exactly the kind of evidence that lets a first consultation skip weeks of guesswork.
Keep the log brief, dated and written the same day
A workable entry takes under a minute: date, route, trigger, distance, behavior, recovery time, and one line of context. Anything longer becomes a diary you will abandon by the second week. Write it as soon as you get home, while distances and details are still honest; a summary reconstructed the night before the appointment quietly drops the mild incidents and inflates the dramatic ones.
Include the uneventful walks as single lines as well. A behaviorist who can see that she passed five dogs calmly at a good distance and reacted to one that burst from a gateway has a threshold to work from. A log containing only disasters looks like a dog who reacts to everything, which may be quite untrue.
Send the log ahead of the appointment
Share the running notes before the consultation, not during it, so the professional arrives having already spotted the patterns you may be too close to see. Flag the two or three entries that worry you most, and add any video you captured safely without prolonging an incident for the camera. Keeping those notes and the behaviorist's replies together in KinsLe Messenger means every conversation about your dog's behavior lives in her own hub, ready to revisit at each follow-up.