Flystrike in Rabbits: Maggot Infestation, Emergency Signs, and Prevention

See your vet immediately if you suspect flystrike. Flystrike, also called myiasis, is a maggot infestation caused when flies lay eggs on a rabbit's skin or fur. It most often affects the rear end, genitals, skin folds, or any area that is damp, dirty, inflamed, or wounded.

Once the eggs hatch, the larvae feed on damaged tissue and can spread fast. In rabbits, this can become life-threatening very quickly because the skin is delicate, the tissue damage can be severe, and rabbits often decline fast when they are painful, stressed, dehydrated, or not eating.

Flystrike is more common in warm weather and in rabbits that cannot keep themselves clean. Outdoor rabbits are at higher risk, but indoor rabbits can get flystrike too if they have urine scald, diarrhea, obesity, wounds, or another problem that leaves the coat soiled.

Flystrike starts when flies are attracted to moisture, odor, inflammation, or wounds. They lay eggs on the rabbit, and the larvae hatch and begin feeding. Areas with urine, feces, discharge, or damaged skin are especially attractive.

Common risk factors include diarrhea, urine scald, obesity, arthritis or spinal pain, dental disease, reduced mobility, wounds, abscesses, skin infections, and bladder problems that cause urine dribbling. Any condition that makes a rabbit less able to groom can raise the risk.

Environment matters too. Warm weather, outdoor housing, poor sanitation, soiled bedding, and high fly exposure all make flystrike more likely. Even so, indoor rabbits are not fully protected if they have an underlying medical problem that leaves the coat damp or dirty.

Your vet usually diagnoses flystrike with a physical exam and close inspection of the coat and skin. In many rabbits, the diagnosis is made by finding larvae, eggs, foul-smelling matted fur, or areas of inflamed and damaged tissue. Clipping the fur is often needed to see how far the infestation extends.

Because rabbits can become unstable quickly, diagnosis is not only about confirming maggots. Your vet may also assess hydration, body temperature, pain level, appetite, gut movement, and signs of shock or infection. In moderate to severe cases, bloodwork and other tests may be recommended to look for dehydration, organ stress, or the underlying problem that led to the flystrike.

Your vet will also look for the reason the rabbit became vulnerable in the first place, such as diarrhea, urine scald, dental disease, obesity, arthritis, or urinary tract disease. Finding and addressing that trigger is an important part of recovery and prevention.

Prevention starts with daily hands-on checks, especially in warm weather. Look at your rabbit's rear end, genitals, belly, skin folds, and any wounds. The coat should stay clean and dry. If you notice urine staining, stuck stool, damp fur, or a bad smell, contact your vet promptly instead of waiting to see if it clears on its own.

Keep housing clean, dry, and well maintained. Change bedding often, remove soiled litter promptly, and reduce fly exposure as much as possible. Outdoor rabbits need especially careful sanitation and monitoring during warmer months, but indoor rabbits still need daily checks if they have mobility or grooming problems.

Long-term prevention also means treating the reason a rabbit became vulnerable. Work with your vet if your rabbit has diarrhea, dental disease, obesity, arthritis, urinary dribbling, wounds, or trouble grooming. For many rabbits, preventing flystrike is really about managing these underlying issues early, before the coat and skin become attractive to flies.