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Vomiting and diarrhoea in dogs: possible causes

If your dog wakes up in the morning, after a good night’s sleep, and vomits bile or water, there’s no reason to start panicking and rushing them off to a vet. Most likely, this is an attack of so-called "hungry vomiting". The metabolic peculiarities of dogs of dwarfish breeds (Pomeranian Spitz, Yorkshire terriers, Biewer Yorks, chihuahuas, etc.) mean that they should be fed fairly often. If it has been 10-12 hours since their last meal, it is possible that they will display the aforementioned symptoms.

Why is this?

When dogs (especially puppies) get hungry, blood sugar levels drop and they starts to vomit, this causes hydrochloric acid to be secreted into the stomach and when this reaches an excessive level, it irritates the intestine, causes inflammation and leads to diarrhoea.

What to do?

If your pet is vomiting, it is important to give them a little honey and sweet tea as soon as possible.  If they have diarrhoea, you should give your dog a three-day course of Nifuroxazide according to the instructions.  This is sold in “human” pharmacies and can have different brand names in different countries, but you will be able to check on the internet.

Shorten the intervals between meals - you need to feed your pet a quality balanced food and make sure that they eat before bedtime and no later than 30 minutes after they get up. Most likely, all frightening symptoms will disappear.

The puppy has mucous or blood in their stool - is it dangerous?

Even if your puppy only has a short spell of diarrhoea, no matter what caused it, you may see mucus or a drop of blood in their excrement. If there is little blood and it is scarlet, you do not need to be frightened - the vessel just burst. Likewise mucous in diarrhoea does not indicate the presence of pathological processes, most likely, it will also disappear when the feeding regimen and stool are normalized.

When should I take them to the doctor?


  1. - the proposed treatment did not help,the dog vomits after eating,
  2. - the diarrhoea is not caused by starvation and did not stop quickly
  3. - there is a lot of blood in the stool (it is black in colour)
  4. - the dog is very depressed and/or shows signs of soreness

You should immediately contact a veterinarian. This may be symptoms of poisoning, viral infection, gastroenteritis or many other diseases. Delay could kill your pet.

Elena Gaynulina, vet and breeder of the kennel "Ot Pandy Sharm" 


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