Hi stranger! Signing up for MypetMD is easy, free and puts the most relevant content at your fingertips.

Get Instant Access To

  • 24/7 alerts for pet-related recalls

  • Your own library of articles, blogs, and favorite pet names

  • Tools designed to keep your pets happy and healthy

or Connect with Facebook

By joining petMD, you agree to the Privacy Policy.

PetMD Seal

Intestinal Parasite (Cyptosporidia) in Dogs


Cryptosporidiosis in Dogs


Cryptosporidiosis is caused by a variety of factors and can be treated effectively with medications. The disease is caused by the ingestion of the intestinal parasite Cryptosporidium and is commonly ingested through contaminated water, food or feces.


The condition or disease described in this medical article can affect both dogs and cats. If you would like to learn more about how this disease affects cats, please visit this page in the PetMD health library.


Symptoms and Types


The most common sign of this disease is fever and diarrhea. Dogs will also display intolerance for food, or in more serious cases, organ disease. Dogs may exhibit lethargy, intolerance for exercise and weakness.




Some of the risk factors include the ingestion of contaminated food or water, the ingestion of animal feces, and intestinal infection. When the Cryptosporidium parasite is ingested in the oocyst stage, it is transferred into the body of the host (the dog). It then develops into a sporozoite, the division and development stage, and proceeds to spread and infect the cells of the host body. The disease is more a concern for puppies, as their immune systems are less developed and more susceptible to complications.




A fecal examination is often performed to determine what the underlying cause is for the issue.





Related Articles

Hookworms in Dogs

Hookworms can be fatal, especially in puppies. As such, pet owners need to be vigilant for signs of hookworms in their dogs. These blood-sucking...

Roundworms in Dogs

Ascariasis is a disease affecting dogs caused by the intestinal parasitic roundworm (or Ascaris lumbricoides). Roundworms are often quite large...

Ticks and Tick Control in Dogs

Ticks are parasitic organisms that attach themselves by mouth to the skin of dogs, cats, and other mammals. These parasites feed on the blood...

Racoon Disease in Dogs

Most commonly called “raccoon disease” because of its prevalence in the raccoon population, baylisascariasis comes from contact with raccoon...