heartworms
/ˈhɑrtˌwɜrmz/
noun
- Parasitic worms that live in the hearts and lungs of dogs, cats, and other animals, causing serious disease.
- Heartworms are spread by mosquitoes and can be fatal if not treated.
- The vet tested the dog for heartworms during the annual checkup.
- Preventive medication is the best way to protect your pet from heartworms.