What causes diarrhoea in dogs?


The majority of cases of dog diarrhoea are caused by your four-legged friend swallowing something they shouldn’t, scavenging is often the culprit, maybe your pooch has eaten something rancid, been through the bin or been indulging in fatty table scraps. He could have swallowed a foreign object such as a toy or your homework which could have blocked his intestinal tract, this can cause diarrhoea or constipation. Of course, we all do our best to discourage our pooches from putting everything but the kitchen sink in their mouths, but dogs are dogs, and this is easier said than done! So, don’t feel guilty if your four-legged friend has got his paws on something he shouldn’t.

Stress and anxiety can be a contributing factor, things like a house move or the introduction of a new pet can set these things off. Sensitivity to antibiotics can also be a contributing factor, if you suggest this is the case consult your vet immediately, don’t stop your pet’s medication without consulting your vet.

A sudden change of diet is also a common reason for a dog’s upset stomach and many pooches routinely suffer from loose stools due to being fed a dog food that they can’t cope with due to having a sensitive tummy or dietary intolerance. Most dogs need time to transition from one dog food to another, instead of completely switching from one dog food to another slowly introduce the new dog food into their diet incrementally increasing the amount you feed your dog of the new dog food while slowly decreasing the amount of the old dog food. This will allow your dog to get used to the new food and avoid stomach issues.

However, diarrhoea could also be the symptom of a more serious and complex underlying condition such as a bacterial or viral infection, ingesting a toxic substance or parasites. Loose stools could also be a sign that your dog is suffering from colitis, pancreatitis or IBS/IBD. Remember diarrhoea is just an indicator that something’s wrong, and as you can see there are so many different things it could be so it’s vitally important to get to the root of the problem. Take a trip to your local vet and get your pooch checked out, it’s better to be safe than sorry.

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