Coccidiosis is a parasitic type of infection that most commonly causes watery, mucus-based diarrhoea in dogs. If left untreated, over time it can cause damage to the lining of the dog’s intestinal tract.  It is particularly dangerous in young dogs, since their immune systems are still underdeveloped.


Watery, mucous-like diarrhoea progressing to bloody diarrhoea and loss of bowel control. The dog may also be dehydrated, weak and appear listless and unwell.


Although it can develop through trauma and stress, it is most commonly contracted from other infected animals. It is spread via contaminated faeces and is usually found in puppies that have contracted the parasite from an adult dogs’ faeces.