A senior dog who was eating happily and turns picky shortly after starting a new medication is sending information, not being difficult. Appetite change is one of the things the veterinarian who prescribed the medication most needs to hear about, because it can bear on whether the medication suits this dog, whether something else has changed, or whether the underlying condition is moving. Treat the pickiness as a report first and a feeding puzzle second.
The First Move Is a Phone Call
Report the appetite change to the prescribing veterinarian promptly, and describe it plainly: when it started relative to the first doses, how much the dog is eating and drinking now, and any other change alongside it, such as sleepiness, restlessness, stomach upset, or drinking more. Never stop, split differently, or adjust the medication yourself while you wait. Some medications lose their effect or cause problems when stopped suddenly, and only the veterinarian who knows why it was prescribed can weigh a change.
Ask what to watch for and when to call again. A veterinarian may want the dog seen, may suggest persevering for a short settling period, or may change the plan; all of those are veterinary calls, and the owner's job is to supply good information and follow the guidance given.
Tempting, Inside That Guidance
While the medication continues exactly as prescribed, make the usual food as inviting as it honestly can be. Warming the food slightly releases smell, and smell is most of an older dog's appetite. Offer small amounts little and often rather than one large bowl that sits and stales, feed in a quiet, undisturbed place away from other pets and household traffic, and stay nearby without hovering or coaxing anxiously, since dogs read tension at the bowl quickly.
Hand-feeding the first few bites sometimes starts a dog who then continues from the bowl. Fresh food offered fresh matters too: a bowl left down for hours loses its appeal and tells you nothing about appetite, while a small fresh offer at set times gives clean information for the log. Keep water available and note how much drinking changes, since thirst shifts are part of the same picture the veterinarian is building.
What Not to Reach For
The instinct to tempt a picky senior toward rich new foods is kind and risky. New rich foods, toppers, and supplements introduced without the veterinarian's say-so can upset an older stomach, interact with the very medication in question, or mask a symptom the veterinarian is tracking; a dog who eats only gravy-rich extras may look better fed while the real picture gets harder to read. Possibilities behind a fading appetite range from a medication effect to dental pain to a change in the condition being treated, and sorting those is the veterinarian's work, done faster with a clean record than with a week of experiments.
The Log Is the Contribution You Can Make
Write it down daily: what was offered, roughly how much was eaten, water intake, each dose given exactly as prescribed, and anything else that changed that day. Memory smooths these details away within days; a log keeps the pattern visible, including the hopeful sign owners most want to report accurately, the first meal eaten with real interest.
That log belongs with the dog's other records, and the Pet Passport on KinsLe is where it can live alongside the medication name, the prescribing clinic, and past visit notes, ready to be read from at the next call or appointment. A senior dog's pickiness after a medication change deserves exactly this combination: a prompt report, patience at the bowl, nothing new added on guesswork, and a daily appetite log kept in KinsLe's Pet Passport that travels to every appointment with the whole history in one place.