Record facts and timings, never interpretations
Your vet needs observation, not conclusions, so write what a camera would see. For each episode note the date, the time it began, and its duration, timed on a clock rather than estimated afterwards, because a frightened owner's two minutes can be thirty seconds or five, and duration drives real decisions. Describe the sequence in order: what he was doing in the minutes before, the first change you noticed, what his body did during the episode, whether he was responsive to your voice, any drooling, paddling, stiffness, twitching, or loss of bladder control, and how it ended. Plain physical words beat labels; your vet will do the interpreting with the whole pattern in front of them.
Capture what surrounded the episode
Patterns often hide in the hours around an event. Note anything different that day: a disturbed night, unusual excitement or stress, visitors, heat, a long journey, a missed or late meal, something new eaten, or a change in his regular routine or care. Record how he was afterwards with the same care: how long before he stood, walked steadily, recognised people, and ate or drank, and whether he slept deeply, paced, seemed temporarily blind or clumsy, or returned to normal quickly. Film an episode on your phone if you can do it without holding him down or putting fingers near his mouth, since a twenty-second clip can show a vet the movement pattern more clearly than any written description.
Bring the diary to every appointment in usable form
Keep all episodes in one diary in date order, with a simple running count and the gap between episodes easy to see, because frequency and clustering are central to how a vet judges whether things are stable or changing. Add the dates of relevant vet visits, tests, and any agreed changes to his care between episodes, so the diary reads as one timeline rather than scattered dramatic moments. Before each appointment, check the diary is up to date, note any episode you witnessed but failed to write up, and flag the questions it raises for you. Hand the vet the diary itself, not a verbal summary, and ask them to note in it what they want recorded differently next time.
Know the episodes that cannot wait for a routine visit
A diary supports planned care, but some episodes need urgent help the same day. Contact a vet immediately, or an emergency clinic out of hours, if an episode lasts several minutes without stopping, if several episodes arrive within a single day, if your dog does not return to himself between them, or if he is injured, struggles to breathe, or cannot stand afterwards. During an episode itself, keep him away from stairs and water, move objects he might strike, dim noise and fuss, time it, and never put anything in his mouth. Note that urgent visit in the diary too. Write each entry while the details are still fresh, even if that means rough notes on the day that you tidy into the diary later the same evening. Keeping the diary inside KinsLe's Pet Passport means the full episode history travels with his other records if an emergency clinic or a new vet needs it at short notice.