09/29/2026
ā¼ļøCuterebra in Cats and Dogsā¼ļø
Cuterebra are bot-flies larvae found in North America. Cats and dogs are accidental hosts; the flies normally affect rabbits and rodents.
Pets usually become infected when they are outdoors and pass near rodents or rabbit burrows or nests. The larvae can enter through the mouth, nose, or skin and eventually develop under the skin. Outdoor pets or hunting cats are at the highest risk, especially in late summer and early fall.
A common sign is a lump or swollen area, often around the head, neck, or body.
Vets typically treat Cuterebra by carefully removing the entire larva with forceps, then cleaning and flushing the wound. The larva should not be squeezed or removed at home, because it can rupture and cause inflammation, infection, or an allergic reaction.
To prevent Cuterebra, limit outdoor roaming and hunting, keep pets away from rodent and rabbit burrows, and regularly check outdoor pets for unusual lumps or wounds. It is recommended to keep your pet on parasite prevention to help limit chances of a Cuterebra.
Contact a veterinarian if you find a suspicious lump, especially if your pet has breathing problems, neurological changes, severe pain, or other unusual symptoms.
