Why remembering symptoms is not enough
Small changes in dogs are often hard to notice clearly. One day the dog eats less, another day the walk is shorter, then there is a change in gait. If those things live only in memory, the exact picture is difficult to reconstruct a week later.
A dog health diary helps when tracking symptoms, caring for a senior dog or caring for a sick dog. It does not diagnose, but it gathers facts that can make a veterinary conversation more useful.