Last Updated on May 5, 2026 by admin
Quick answer: if you think your cat has a warble, call your veterinarian. Warbles are Cuterebra botfly larvae under the skin. Treatment often involves removing the larva, but this is a veterinary procedure, not a home plucking job.
Do not squeeze the lump, dig into the opening, apply random ointments, or try to pull the larva out with tweezers at home. Merck Veterinary Manual warns that squeezing can rupture the larva, which can lead to a chronic foreign-body reaction, secondary infection, and anecdotal reports of anaphylaxis.
What are warbles in cats?
Warbles are swellings caused by Cuterebra larvae. Cats are accidental hosts and are usually exposed while hunting or exploring areas around rodent or rabbit burrows. VCA notes that many cases appear around the head and neck, although lesions can occur elsewhere.
A typical skin warble may look like a round swelling with a small breathing hole. You may also see drainage, matted hair, licking, discomfort, or a moving object in the opening. Similar-looking lumps can also be abscesses, foreign bodies, tumors, or infected wounds, so diagnosis matters.
How vets treat warbles
Veterinarians remove Cuterebra larvae carefully and try to keep the larva intact. Depending on the location and the cat’s comfort level, the vet may use sedation or local care, widen the opening, remove the larva with proper instruments, flush the wound, debride damaged tissue, prescribe pain relief, or treat secondary infection.
PetMD emphasizes that the entire larva needs to come out without significant damage to its body. Leaving pieces behind or crushing the larva can cause chronic infection or a severe allergic reaction. That is exactly why owner-directed “scalpel and tweezers” instructions do not belong in cat-care advice.
Is a warble an emergency?
A skin warble is usually a prompt-vet-care problem rather than a wait-and-see problem. Call your veterinarian the same day you notice a suspicious lump, breathing hole, moving larva, discharge, or swelling.
Seek urgent care if your cat is lethargic, feverish, not eating, painful, breathing strangely, sneezing violently, wobbling, having seizures, showing eye problems, or has a warble near the eye, nose, throat, or another sensitive area. Merck notes that larvae can rarely migrate through sensitive tissues including the eyes, nose, airway, and brain.
What to do while waiting for the vet
- Keep your cat indoors and prevent scratching or licking if you can do so safely.
- Do not squeeze the swelling or block the breathing hole.
- Do not cut the skin or probe the opening.
- Do not apply essential oils, peroxide, alcohol, or human wound ointments.
- Take clear photos and note when you first saw the lump or drainage.
If the site looks like an open wound after the larva has left, it still needs veterinary attention because infection can develop in the empty cyst. For general wound cautions, see Fluffy Tamer’s guides to Neosporin and cat wounds and cat bite and scratch wounds.
Can people catch warbles from cats?
You do not catch a warble directly from your cat like a contagious cold. Cuterebra exposure comes from the environment, usually places where botfly eggs are near rodent or rabbit burrows. Still, avoid handling discharge or wounds with bare hands, wash your hands after care, and let your veterinarian manage removal and cleanup.
How to reduce risk
The biggest prevention step is reducing hunting and burrow exposure. Keeping cats indoors, using supervised outdoor time, and checking outdoor cats during late summer and fall can help. VCA notes that earlier removal lowers the chance of severe or permanent damage.
Bottom line
Warbles in cats can often resolve well with proper veterinary care, but DIY removal can make things worse. If you see a suspicious lump with a hole, drainage, or movement, keep your cat from bothering it and call your veterinarian for safe removal and wound treatment.
Sources: Merck Veterinary Manual Cuterebra infestation; VCA Cuterebra or warbles in cats; PetMD botfly infestation in cats.