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Hookworms in a dog

Hookworms are intestinal, blood-feeding, parasitic roundworms that cause types of infection known as helminthiases. In humans, hookworm infections are caused by two main species of roundworm belonging to the genera Ancylostoma, and Necator. In other animals the main parasites are species of Ancylostoma.


The two most common types of hookworm that infect humans are Ancylostoma duodenale, and Necator americanus.

Hookworm species that are known to infect cats are Ancylostoma braziliense, and Ancylostoma tubaeforme. Wild cats are infected by Ancylostoma pluridentatum.

Dogs are commonly infected by Ancylostoma caninum.

The only zoonotic hookworm is Ancylostoma ceylanicum that can infect humans and other mammals.[1]


  1. ^ Traub, RJ (November 2013). "Ancylostoma ceylanicum, a re-emerging but neglected parasitic zoonosis". International journal for parasitology. 43 (12-13): 1009–15. doi:10.1016/j.ijpara.2013.07.006. PMID 23968813.