What to do if your pooch has stinky dog poos

Dog poo is a hot topic among owners. We know our dog’s poo can tell us a lot about their health and wellbeing. But since our canine friends can’t talk to us, it’s our job to pay attention to the signs. Because when poor Fido has a case of dog diarrhoea, we know something’s not quite right. 

All dogs react to dog food in different ways, and stinky or runny dog poos can often signal poor nutrition. Some dogs are also sensitive to certain ingredients and would benefit from a special diet. 

In this post we’ll explore the ins and outs of dog poos and what you can do to ensure your dog has a healthy tum. 

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What causes stinky or runny dog poo? 

It’s not unusual  for dogs to have stinky or runny poos. In fact, dog diarrhoea is one of the most common problems vets see every year. There are many causes for dog or puppy diarrhoea, but here are a few of the most common. 

Sudden change in diet – A sudden change in your dog’s diet can cause irritation leading to diarrhoea. If you’re changing your dog’s diet, it’s best to do it gradually as explained in our guide to changing dog food

Dietary indiscretion – If your dog eats something new or inappropriate, this can cause digestive upset. Whether that’s a piece of ham, rocks, a plant, or even dog poo!

Stress – Stress, anxiety and excitement can all cause dog diarrhoea, just like in us humans.

Parasites – Intestinal worms can cause irritation to your dog’s gastrointestinal tract resulting in stomach upset. However, parasites that cause diarrhoea are more common in younger puppies. 

Infections – Viral and bacterial infections can cause dog diarrhoea. This occurs more frequently in younger dogs. 

Inflammatory disorders – Conditions like inflammatory bowel disease are common in both dogs and people. Many gastrointestinal disorders can result in diarrhoea. 

What makes a good dog poo? 

Consistency – the ideal poo is log shaped and firm, but not too solid. If your dog’s poo is too hard, this can cause constipation. If your dog is constipated this could be due to a lack of water or fibre in their diet, or a case of worms. More commonly, when diarrhoea or loose, runny poo occurs, this can result from many different causes. 

Frequency – most dogs poo around twice a day, but this can depend on their feeding schedule. Puppies tend to poo more frequently because they eat more regularly. If your dog poos more than three times a day, this could signal there’s something not right with their diet. Equally, if your dog has a food intolerance, this can also make them more poo more often. If your dog doesn’t poo every day or only once a day, they could be constipated. Always consider what’s normal for your dog. If your dog’s toilet habits have changed dramatically after switching diet, we can help.

Volume – sudden larger or smaller poos can indicate internal problems. Huge volumes of poo can mean your dog isn’t digesting their food properly, or their diet is high in fibre. Low volumes could indicate gastrointestinal problems or even a blockage. If it’s out of the ordinary, always get your dog checked over by a vet. If your dog has experienced any changes after switching to tails.com food, get in touch and we’ll happily help.

Odour – dog poo should have a mild odour; any dramatic changes can indicate problems. Flatulence or a particularly stinky poo could signal a change in your dog’s gut flora, or they’re struggling to cope with a new diet or ingredient. Treats and human foods are common culprits! Dog poo is always going to smell, but with a good diet your dog’s poos should be bearable. 

Colour – the colour of your dog’s poo depends a lot on your dog’s diet. Only you know what is normal for your dog. Shades of greenish brown, red brown or dark brown are all normal. However, abnormal colours like dark black tarry substances could indicate internal bleeding and digested blood in the stool. Pale, yellowy or greasy poo can indicate fat digestion issues with the pancreas, or malabsorption where your dog can’t absorb fat. Any dramatic changes in colour, from very pale, bright orange or visible blood is a cause for concern. In this case, always see your vet and take a stool sample with you.

What to do about your dog’s irregular poos? 

So if your furry friend’s poo seems out of the ordinary, always get them checked out by a vet. 

If you think your dog’s diet is causing their diarrhoea, we’d love to help. Here at Tails.com we can create your dog’s unique recipe with the exact nutrients they need. We’ll tailor their recipe based on their health, lifestyle, breed and more. And what’s the result? A waggy tail and all the goodness their body needs. Get 50% off your first box today


  1. Our Labrador Retriever has his daily meal amount divided into 3 meal times. 7.15 am, 12.30 and 5.30pm
    He poo’s 4 times a day. His first poo in the morning is firm and a dark greenish brown colour. His further poo’s are a lighter brown and stools start firmish but end soft and difficult to pick up.
    Have I cause for concern or change of diet.

  2. Our dog has been recommended to eat anallergenic dry food by the vet. This has cured the severe vomiting that he began to experience with other types of food. However although he drinks plenty of water as well, he now has a problem with constipation. His stools are very hard, the size and shape of marbles. Can you recommend a fibrous supplement we could give him that would also be non allergenic?

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