Eucoleus spp.

Common info

Encoleus spp. is a group of parasites founds in the respiratory system. Encoleus aerophilus is a parasite that can find in the bronchia and the lungs of dogs and cats, resulting in shortness of breath, pneumonia, fluid build-up in the lungs, emphysema, bronchitis, and dyspnea.


In 1839, there was a discovery of parasites in foxes respiratory and named Trichomaaeophilus. In 1915, it classify in the Capillaria group. Later, it accept to be in the Eucoelus group and is an Encoleus spp. group that can be harmful.


Dogs and cats will get infected Encoleus spp. From drinking water or eating animals that have larvae in the respiratory system. Encoleus spp. larvas will move from the intestine, go through the bloodstream, and to the lungs. Encoleus spp. will develop themselves into adults and lay eggs. Encoleus spp. eggs in the respiratory system will come out with feces, which birds, rats, snakes or other animals come to eat. Puppies and kittens can get infected Encoleus spp. from their mother dog or mother cat when the mother dog coincidence lick or eat the feces of infected dogs.  


  • Bronchitis
  • Dyspnea
  • Emphysema
  • Fluid build-up in the lungs
  • Pneumonia
  • Shortness of breath

Dogs and cats will be asymptomatic if having only a small number of Encoleus spp. When there is a large number of Encoleus spp.  in the respiratory system, they will cause shortness of breath in animals when having them in the system for too long. Encoleus spp. in dogs and cats will cause complications such as pneumonia, emphysema, bronchitis, fluid build-up in the lungs.

Treatment and Prevention

Encoleus spp. in dogs and cats can treat by giving them a dewormer such as Ivermectin and Fenbendazole, for prevention, limiting and keeping them in a safe space to avoid Encoleus spp. in dogs and cats.

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  7. Honestdocs | Lungworm in cats (Thai version)
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