Senior dogs rarely announce a problem all at once. More often the first announcement is a pattern break at the bowl or the water dish: a dog that has eaten the same food happily for years begins leaving it, or a water bowl that lasted all day suddenly needs refilling by noon. Knowing which breaks deserve a prompt call, and which facts to have ready, shortens the distance between noticing and help.
Clear Change, Not Slow Drift, Is the Trigger
Judge appetite and thirst against your own senior dog's established normal, not against another dog and not against puppy years. A gradual softening of enthusiasm over many months is worth raising at the next routine visit. A clear break is different: drinking markedly more, drinking markedly less, refusing food outright, or eating far less than usual over consecutive meals all deserve a prompt call rather than another week of watching.
Urinating much more often, or in larger amounts, belongs in the same prompt category when it arrives alongside heavier drinking, because the pair together gives the vet a sharper picture than either one alone. So does a dog that hovers over the water bowl, returns to it again and again, or seems unable to settle after drinking. Describe the pattern exactly as observed; plain description is what triage works from.
Accompanying Signs Raise the Urgency
Report the company the appetite or thirst change keeps, because accompanying signs often decide how quickly the vet wants to see your dog. Mention vomiting or retching, food falling from the mouth, drooling that is new, pawing at the mouth, or visible difficulty chewing and swallowing. Mention weight slipping away, especially when the ribs or hips feel more prominent during ordinary stroking than they did a few weeks earlier.
Add changes in energy and comfort: sleeping far more, reluctance to rise or walk, restlessness at night, or new bad breath. None of these observations names a cause, and that restraint matters. Changes like these can accompany a wide range of problems, from mouth pain to illness a vet can only sort out with an examination and, where the vet judges it useful, tests. Your role is accurate reporting, promptly; the vet's role is finding the cause.
Watch the water bowl as a sign in itself: a bowl found empty in the morning, or one needing refilling far more often than usual, is a fact worth reporting exactly as you found it, and drinking at night is worth noting in the same plain way.
Have the Husbandry Facts Ready Before You Call
A prompt call goes better with measured facts than with impressions. Note the starting day, how much water you are putting down and how much remains, and how much food is offered and left, measured for a day or two if the situation allows it without delaying the call. Write down the current food, any recent switch of food or treats, and any change in routine, visitors, or household stress that began at the same time.
List anything your dog already receives for existing conditions, exactly as labeled, so the vet hears the full picture in one call. Then call and describe, even if the picture feels incomplete; a vet practice would rather help you decide that a visit can wait than hear late about a change that could not. Dated notes on appetite, thirst, and weight sit alongside the visit history in a Pet Passport record, which KinsLe preserves so any new change can be compared with the last one quickly.