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Dog Has Diarrhea

Acute diarrhea (1 to 3 days) is often harmless: stress, the wrong food, or a food switch. A bland diet can help in the short term. With puppies, head to the vet right away, since they dehydrate quickly. Chronic diarrhea or strong accompanying symptoms need to be checked out.

A cute white dog with pointy ears and a turquoise bandana in a bright kitchen.

Watery stool, three times a day or more, and you are not sure whether to wait it out or head to the vet? In most cases it comes down to stress, a food switch, or something wrong picked up off the ground. With puppies, though, diarrhea is an immediate case for the vet, because they dehydrate quickly.

The most important points at a glance
  • Acute diarrhea (1–3 days) is usually harmless: stress or the wrong food
  • Chronic diarrhea (longer than 3 days) needs to be treated by the vet
  • Puppies with diarrhea go to the vet right away: risk of dehydration!
  • Bland diet after 24h of fasting: rice, low-fat meat, cooked vegetables
  • Plenty of water to make up for the fluid loss

Definition and Symptoms

Diarrhea is a malfunction of the gastrointestinal tract. Bowel movements happen more than three times a day and are marked by watery or mushy stools.

Common accompanying signs

Cramping abdominal painBloatingNausea and vomitingLoss of appetiteTiredness and exhaustionRaised body temperatureReduced urine outputDehydration

Causes

The causes of diarrhea are varied. Acute diarrhea (1–3 days) is usually harmless, as long as the dog is otherwise fit. If the diarrhea lasts longer than two days, or blood, vomiting, or listlessness come along with it, go to the vet. Chronic diarrhea (longer than 3 days) should be treated by the vet in any case.

Acute vs. Chronic

Acute diarrhea (harmless)
  • Stress or excitement
  • Food or a treat that does not agree with them
  • Food switch
  • Portion too large
  • Spoiled food
Chronic diarrhea (vet!)
  • Gastrointestinal diseases
  • Poisoning
  • Viral or bacterial infections
  • Autoimmune diseases
  • Parasites (giardia, worms)
  • Kidney or liver disease
  • Hormonal disorders

Extra Caution With Certain Symptoms

A pile of bright blue seeds, heaped high on a blue dish in the grass outdoors, points to a hidden danger for dogs.

These symptoms often point to poisoning. Sadly, many dogs still die from poison bait scattered in forests, parks, and meadows.

Pay Attention to the Dog Food

Cheap food products in particular, with added sugars, lots of animal by-products, and hard-to-digest proteins, can trigger diarrhea.

Switching food

A food switch should take at least 4 days. For sensitive dogs, 1–2 weeks. Mix small amounts of the new food into the old one and increase the share step by step.

3 Tips to Get Diarrhea Under Control

1. Enough Fluids

Make sure your dog takes in enough fluids. Set out several water bowls and encourage them to drink.

2. Put Them on a Fast (max. 24 hours)

If your dog doesn't take in any more food, the gastrointestinal tract gets a chance to settle.

3. Bland Diet

After 24 hours at the most, your dog gets a bland diet. The right foods:

FoodPreparationWhy it's good
RiceCooked soft, unsaltedIdeal bland food
Chicken/turkeyBoiled in water, low-fatEasily digestible protein
CarrotsCooked soft and pureedGood for digestion
PumpkinCooked soft and pureedEasy on the stomach
PotatoesCooked only! (raw is toxic)Easy on the stomach

You'll find a tried-and-tested recipe to cook at home in our bland diet recipe for dogs, with an exact ingredient list and instructions.

Diagram showing a dog with its digestive system and five tips for diarrhea: hydration, fasting, bland diet, suitable foods, and helpful preparations.

How to Best Protect Your Dog

Prevention

High-quality dog food without additivesLow-fat treats without preservativesFruit and vegetables only cooked and pureedAvoid milk and dairy productsDon't switch food abruptlySplit the food into several portions

Further Guides

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When does diarrhea in a dog count as chronic?

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Veterinarian Mag.med.vet. Emin Jasarevic

Written by

Veterinarian Mag.med.vet. Emin Jasarevic

Veterinarian & Medical Author

Mag.med.vet. (Veterinary Medicine)Practicing VeterinarianCo-Author of the Hunde Gesundheits Bibel

Veterinarian Mag.med.vet. Emin Jasarevic creates medically accurate articles and videos on animal health topics. He is co-author of the Hunde Gesundheits Bibel and ensures professionally correct content at Hundeo.

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