A bout of diarrhea is one of the most common reasons dogs end up at the vet - and one of the easiest to lose track of. A dog that is still bright and eating often settles within a day or two, but the moment to act is usually tied to the clock: most owners are told to have a dog seen if the diarrhea drags on past about 48 hours, or sooner if other signs show up. PetHealthLog lets you log each loose stool, how it looks and how often it happens, alongside appetite, energy and water - so you can see at a glance whether things are easing or whether that 48-hour mark is creeping up. Free, no account, works offline.
Start tracking - it's freeDiarrhea in dogs has many causes - a sudden food change, scavenging, stress, a bug, parasites, or something more serious underneath - and the cause is what decides the treatment. With a mild one-off, a dog that stays playful and keeps eating often comes good on its own within a day or two. What most guidance has in common is a timeline: if the diarrhea keeps going past roughly 48 hours, or if blood, vomiting, low energy, a poor appetite or signs of dehydration appear, it is time to have your dog seen. This is general information, not a diagnosis for your dog.
That timeline is exactly where a record helps. "It's been a couple of days" is a guess; a dated log of each stool tells you it has been thirty-one hours, that the last two looked a little firmer, and that your dog ate breakfast - the kind of detail that makes the next decision clear and gives your vet a real picture.
PetHealthLog is free, asks for no account and works offline, so every stool, meal and note lands in one place. By the time you are deciding whether to call, you are reading a timeline instead of trying to remember one.
A record only helps if it is quick to keep and lines up with what your vet will ask. Here is how PetHealthLog handles a bout of diarrhea.
Mark each bowel movement with the time, so you can see how often it is happening - one or two soft stools is a very different picture from one every hour, and the count is exactly what your vet wants to know.
Jot down the consistency and colour - watery, soft, mucousy, or any streaks - in a quick note. A dated description makes a change obvious and saves you trying to describe three days of stools from memory.
Record whether your dog is still eating, still bright, and still drinking. These are the signals that often matter more than the stool itself, and seeing them dip is what tells you to stop watching and call.
Because every entry is dated, you can see exactly how long it has been going - so the common 48-hour mark does not slip past while you are busy hoping it settles.
Export a clean PDF of the stool timeline, the notes and the appetite record, so a call or visit starts from a real log instead of "it's been a couple of days, I think".
What is causing the diarrhea and whether anything should be given are your vet's department - but day to day, the supportive basics owners reach for are keeping fresh water available so a dog can stay hydrated, a bland diet only if and as your vet advises, plenty of clean-up supplies, and a way to collect a fresh stool sample if your vet asks for one. The everyday extras that make a bout easier to manage are enzymatic clean-up spray for accidents, poop bags, and a fresh water bowl kept topped up.
These search links show popular options on Amazon. They are just the everyday extras for cleaning up and keeping water handy - any diet change, medication or treatment comes from your vet.
Enzymatic clean-up spray → Poop bags → Water bowls → Washable pads →#ad - affiliate links: as an Amazon Associate, PetHealthLog may earn from qualifying purchases at no extra cost to you. Informational only, not veterinary advice. Do not give your dog any human anti-diarrhea medicine, supplement or new food without your vet's go-ahead - some are unsafe for dogs and can hide a problem that needs treating.
Diarrhea does not keep office hours. The stools you most want to note happen late at night, on a 6am walk, or in the middle of a busy day - and often the next one matters more than the last. The last thing that should stand between you and logging it is a login screen or a dead signal.
PetHealthLog stores everything locally on your device. There is no account to create, nothing is uploaded to a server, and there is no tracking. It opens instantly, lets you mark a stool or a note whether or not you are online, and keeps the data yours. You can export a backup any time and restore it on another phone.
Free, offline, and ready the moment you open it.
Start with PetHealthLogWhen vomiting and diarrhea hit together, log both side by side to see the whole bout at once.
If your dog also goes off food, count the missed meals alongside the stools to see the full picture.
For a diagnosed sensitive stomach or pancreatitis, track the low-fat diet and any flare-ups over time.
If your vet has started a gut-support plan, log the probiotic doses and how the stools respond.
Keep any medication the vet prescribes on schedule and catch the doses that slip.