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Dogs + Parasites

  • Cryptosporidium is a species of single-celled parasite that can infect your dog through the gastrointestinal tract. Clinical signs such as diarrhea and weight loss may only be seen in immunosuppressed patients, including puppies. These patients may need supportive care and other treatment to control disease. Certain Cryptosporidium species can be spread between pets and humans, making this parasite zoonotic.

  • Liver fluke (Heterobilharzia americana) is a parasitic worm that affects dogs in the southern Atlantic and Gulf states and causes a disease called schistosomiasis. The fluke’s lifecycle is complex and involves a freshwater snail. Dogs can become infected by swimming or wading in water that has the larval stages of the fluke. The flukes cause granulomas (inflammatory nodules) to form in the liver, intestines, and other abdominal organs. Symptoms of gastrointestinal and liver disease may be present.

  • Lotilaner + moxidectin + praziquantel + pyrantel (brand name Credelio Quattro®) is a combination antiparasitic used to protect against ticks, fleas, heartworm disease, roundworms, hookworms, and tapeworms in dogs and puppies 8 weeks of age and older and weighing at least 3.3 lb (1.5 kg). It comes in a chewable tablet to be given monthly. Its use is currently only approved for dogs.