Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Cryptocotyle lingua (dog, cat)



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Distribution: Worldwide in northern temperate marine coastal regions.            

Host: Intestine of cats and dogs.              

Life Cycle: Snails are infected by larval stages emerging from eggs released in the feces of infected defnitive hosts. Fish serve as the second intermediate host. Dogs, cats, and birds become infected by ingesting metacercariae, visible as small black spots on the skin of fish.

Diagnosis: A sedimentation technique (recommended) or fecal fotation (less reliable) can be used to detect these small, undifferentiated, yellow-brown, operculate eggs. The eggs are           elliptical shaped with one end narrower than the other. The operculum occurs at the narrower end and is diffcult to see.    

Size: 32–50 × 18–25 µm               

Clinical features: Clinical disease due to infection with this intestinal fuke appears to be rare. Enteritis may occur in cases of heavy infections. Cats appear to be less susceptible to infection. Dogs and cats may also be rarely infected with acanthocephalan (Onicola) and pentastomid (Linguatula) parasites.          



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