1. Dietary Changes and/or Indiscretions
Dogs love to chew everything. Anyone who has had their favourite shoes turn into their pet's favourite chew toys knows this. Sometimes things end up in the stomach. Foreign objects often pass through the dog's digestive tract without any problem, but this isn't always the case. Sometimes they can irritate the intestinal lining or even get stuck and cause a blockage. It can even be fatal. Abrupt changes can also lead to loose stool as can eats too much of something. The days after a party of barbecue where the dog was free to make friends can end in diarrhoea as well.
There are several viruses that can cause diarrhoea. Of these, Coronavirus is the most mild, causing a disease that dogs normally recover from, although it is debilitating. There is a vaccine for this disease.
Parvovirus causes bloody diarrhoea, vomiting, fever is possible, abdominal pain and dehydration. Vaccinations against these diseases has helped bring down the incidence of these diseases.
Distemper causes diarrhoea as well as respiratory and neurological symptoms, including sneezing, coughing, fever, vomiting, diarrhoea, and even seizures. Prevention is more important than treatment. Vaccinate your dog.
5. Bacteria: Clostridia, Campylobacter, Salmonella
Clostridia is a deadly little bacteria that has several species that causes different problems, including Botulism and Tetanus. The Clostridium which causes diarrhoea is Clostridium perfringens and it can cause hemorrhagic colitis, which is a disease where the dog suffers from bloody diarrhoea that can be fatal. Campylobacter can cause a mild disease with diarrhoea, vomiting and fever for 2 to 5 days. Salmonella can have no symptoms in dogs or it can cause acute enterocolitis with fever, lethargy, bloody diarrhoea or diarrhoea with mucous, generalized infection and abdominal pain.
6. Internal parasites
There are many types of worms that can infect dogs, including whipworms, hookworms, tapeworms, heartworms, among others. When the worm population gets out of control, it can cause intestinal disturbances. It can also cause other things like weight loss and bad coat.
Dogs can also get all food allergies that leads to diarrhoea. Food allergies are usually related to proteins. It could be from beef, dairy, wheat, chicken, eggs or soy. Corn can also cause it in rare cases. The most affected breeds include the Bichon Frise, Chinese Shar-Pei, Cocker Spaniel, Collie, Dalmatian, German Shepard, Golden Retriever, Labrador Retriever, Lhasa Apso, Miniature Schnauzer, and West Highland White Terrier.
8. Toxins and Poisons
Dogs can get into toxins and poisons. This can be accidental or, unfortunately, intentional. It can be caused by everyday items around the house, like insecticides, fertilizers, pesticides and household cleaning supplies, just to name a view.
9. Inflammatory Bowel Disease
There is much about this syndrome that is not known. The cells of the gastrointestinal tract become inflamed and white cells invade. It causes chronic diarrhoea. Breeds that are more predisposed to this disease are the Basenji, the Shar pei and the soft-coated Wheaton terrier.
10. Disorder with certain organs: kidney, liver, pancreas
Organ failure of the kidney and liver can cause chronic diarrhoea as can disorders relating to the pancreas. Other symptoms can include weight loss and vomiting.
As you can see, diarrhoea is a symptom that can be the tip of the iceberg when it comes to diseases. There can be a lot unseen that is going on and must be dealt with and your veterinarian is the one who is best equipped to diagnose, find the cause and treat these 10 common causes for a sick dog with diarrhoea.