Glossary of terms used on this site

This glossary is to help pet people understand the language that veterinarians may use when treating their pets.


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Term Definition

 This worm lives in the heart and/or lungs of dogs and cats and is transmitted by mosquitoes. An adult worm can measure as long as 16 inches in length.



These are small parasitic worms that live in the intestines of dogs, and drink the dog's blood for their nutrition. Their name refers to the hooked mouthparts which fasten to the intestinal walls of the dog. Dogs develop anemia from the blood loss caused by hookworms.


This is the living animal or plant that a parasite lives in or upon, and obtains nutrition from. Usually used to define your pet, but may also include you and your family.