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Merck Manual
Veterinary Manual
The trusted provider of veterinary information since 1955

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VETERINARY PET
Larva, Ollulanus tricuspis, cat
ollulanus-tricuspis-larva-peregrine-sized
Larva, Ollulanus tricuspis, cat

    Third-stage larva of O tricuspis (total length approximately 500 mcm) found in the vomit of a cat using the Baermann diagnostic method. Note tricuspid tail.

Courtesy of the National Center for Veterinary Parasitology, Oklahoma State University.

Merck & Co., Inc., Rahway, NJ, USA (known as MSD outside of the US and Canada) is dedicated to using the power of leading-edge science to save and improve lives around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Vet Manual outside of North America.

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