Everyday Puppy Health: Diarrhoea, Giardia, Grooming Routine
Between vaccination appointments lies everyday health: a stomach that reacts to everything, parasites that specialise in puppies — and a grooming routine you build now, while it's still adorably small.
Your puppy is now about 18 weeks old
The essentials at a glance
Diarrhoea becomes a vet case sooner in a puppy than in an adult dog: after 24 hours, or immediately with blood, vomiting or lethargy. Recurring slimy diarrhoea smells like giardia — test instead of guessing. And: nails, brush and ear checks become a weekly routine now.
- One soft stool in a bright puppy: observe, bland diet, no drama. Longer than 24 hours, bloody, or with lethargy: call the practice.
- Giardia is the most common diarrhoea pathogen in young dogs — typically recurring, slimy, waxing and waning. Diagnosis via stool sample.
- The monthly deworming or faecal check from week 4 continues — until month six.
- Tick and flea protection gets organised now: product and rhythm agreed with your practice, not guessed off a shelf.
- Nail trimming, brushing, ear and tooth checks: once a week, with treats, before it's necessary — medical training in miniature.
This article summarises current professional guidance for orientation and does not replace veterinary advice in the individual case. If your dog is unwell, your vet is the right address.
What do you do about puppy diarrhoea?
Triage first: a single soft or mushy stool in a puppy that eats, plays and drinks is usually the receipt for excitement, food experiments or a find in the bushes. Then it's: rest, water on offer, one or two days of bland food in small portions — boiled chicken with rice or Moro's carrot soup are the classics — and keep an eye on the stools.
Diarrhoea becomes a vet case markedly earlier in a puppy than in an adult dog, because the small body barely buffers fluid loss: after 24 hours without improvement at the latest; immediately with blood in the stool, repeated vomiting, fever, listlessness, or if the puppy stops drinking. In doubt, calling the practice is never wrong — that's what the saved number is for.
What you don't do: give medication from the human medicine cabinet on your own initiative. Several of them — ibuprofen and paracetamol above all — are toxic to dogs. And “charcoal tablets and wait” doesn't replace a diagnosis in a sick puppy.
Giardia: why does the diarrhoea keep coming back?
When a young dog's diarrhoea goes and returns — sometimes slimy, sometimes watery, often foul-smelling, while the puppy seems bright in between — giardia tops the list. According to ESCCAP, these single-celled gut parasites are the most common endoparasite finding of all in dogs under one year.
Diagnosis is unspectacular: a pooled stool sample over three days, because the pathogen isn't shed with every stool. Treatment is a prescribed antiparasitic — and, at least as important, hygiene: bowls rinsed hot daily, bedding washed, faeces removed immediately and completely, and the dog bathed after treatment so he doesn't reinfect himself from cysts in his coat.
The hygiene part is where most “stubborn cases” fail. Schedule the follow-up test after treatment as a fixed appointment, and inform owners of contact dogs from puppy class or your circle — giardia likes to travel through entire playgroups.
Worming, ticks, fleas: what runs on schedule now?
The base melody you know from week 4: monthly deworming or faecal checks until month six. The calendar entry matters more than the product — slipped rhythms are the most common mistake in parasite protection.
New in the warm season is protection against ticks and fleas. Which active class, whether spot-on, tablet or collar, depends on age, weight, region and lifestyle — that's a conversation with your practice, not a drugstore shelf decision, especially since some products are only licensed from a certain age or weight.
Regardless of product, after every walk through tall grass: one check-over — head, ears, armpits, between the toes. A tick removed early is the best protection; a tick remover belongs retrofitted into the starter kit if it's missing.
How do you build the grooming routine?
On the week-8 principle: practise before it's needed. A puppy who collects treats weekly for thirty seconds of brush, paw handling, ear look and tooth check has no grooming drama as an adult — and you spot changes like redness, lumps or tartar before they become problems.
Nail trimming is the exercise with the greatest fear potential — on both sides of the clippers. The rule: standing on level ground, the nails shouldn't touch the floor. Trim millimetre by millimetre in front of the quick (the blood-supplied core, visible in light nails); with dark nails, take tiny slivers more often instead. Have the first cut shown to you at the vet practice — one wrong cut into the quick, and the paw phobia is learned.
Bathing, by the way, only happens when genuinely necessary — lukewarm water and mild dog shampoo, never human shampoo (wrong pH). Usually a brush and a damp towel suffice; the coat self-regulates better than shampoo advertising claims.
The weekly routine (30–60 seconds each, with treats)
- Brushing — matched to coat length, more often during shedding.
- Paws: spread toes, look at pads, check nail length.
- Ears: look and sniff test — healthy ears are pale pink and low-odour.
- Teeth: lift the lip, check teething progress and plaque.
- Eyes: clear and without discharge?
- Run your hands over the body once: lumps, dander, parasites.
Frequently asked questions
Which bland diet helps with diarrhoea?
Proven: boiled, unseasoned chicken with soft-cooked rice, or Moro's carrot soup (carrots boiled for an hour, puréed, lightly salted) — in several small portions across the day. Water stays available. If nothing improves within 24 hours, it's the practice's turn, not the next recipe.
My puppy eats faeces — is that connected to parasites?
Coprophagy in puppies is mostly exploratory and fades with management (remove faeces immediately, build an interrupt cue, lead past on the leash). But it does raise the parasite risk — keep the deworming or faecal-check rhythm strictly, and mention it at the next practice visit.
How do I recognise an ear infection?
Head shaking, scratching at the ear, head tilt, redness, dark discharge or a sweetish-foul smell. Don't work on ears yourself with cotton buds — they only push secretion deeper. The look into the ear canal belongs to the practice; treatment is usually straightforward when it starts early.
When should I start brushing teeth?
The training starts now — with a finger brush or soft dog toothbrush and dog toothpaste (never human toothpaste; fluoride and xylitol are toxic to dogs). During teething it's only about habituation: lift the lip, touch briefly, reward. Proper brushing starts once the permanent teeth are in — then ideally several times a week.
How often does a puppy need routine practice visits?
Outside acute events, the vaccination appointments structure the first year — after the 16-week shot comes the completion at fifteen months, with deworming or faecal checks on schedule in between. Many practices also offer an adolescent check around month six — sensible for a professional look at teething and development.
Sources
- ESCCAP Germany — updated giardia recommendations
- ESCCAP Germany — how often to deworm dogs
- Ismaning Animal Clinic — foods and medicines toxic to pets
Last reviewed on July 27, 2026 by Sufyan Osamah · what that means: Editorial standards
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