The phrase "infected pet" refers to a pet, like a dog or cat, that has picked up a disease or illness. It means that the pet is carrying the germs or microorganisms that can make them sick and possibly spread the sickness to other animals or humans.
Sentences with «infected pet»
That's because heartworms live in the bloodstream, lungs, and heart of infected pets. (allpawsawc.net)
Avoid contact with infected pets, and get all your pets examined and treated at once. (cat-lovers-only.com)
(ref 4, ref 1) Wearing protective gloves when handling infected pets can help you avoid catching this condition. (dogcare.dailypuppy.com)