Maggots in cats is a seasonal condition, affecting felines in the warmer months of the year when adult flies are present. Myiasis in felines is noted by red, raised sores on the skin with the presence of maggots. The maggots will feed on necrotic tissue, but are also attracted to moist and inflamed skin caused by draining wounds, skin infections, and fecal-soaked fur coats. Cats with long fur coats are more commonly infected and the infection often goes unnoticed for a period of time due to the fact that the small maggots are hard to visualize through the long hair. Felines that suffer from urinary or fecal incontinence, newborn kittens, and fighting Toms are at high risk for contracting myiasis.

A maggot is a thin, tubular fly larva that will appear as a white worm. A fly is a small, winged insect that, as an adult, feeds on blood, tears, and mucus. There are approximately 34 species of flies in North America, but the only flies to cause a true maggot infection are the flesh flies, bottle flies, blow flies, and the average house fly. Fly strike, or myiasis, is the term veterinarians use to define a maggot infection. A maggot feeds on necrotic, or dying, tissue of any mammal, which would be present in an open wound. Cats which have been bitten or newborn kittens that have healing umbilical cord stubs will attract the female fly. The bred female will lay her eggs in the opening of the skin and within three days, the eggs will hatch and begin feasting on the feline’s dying flesh. The saliva of the maggot contains a specific enzyme that serves the purpose of penetrating the skin, causing a bacterial skin infection for the feline. 

Myiasis may only have one symptom in a feline, and that is the observable presence of maggots. A maggot will appear as a white, tubular worm, found in an opening on the feline’s skin. 

The enzyme-rich saliva of the maggot often causes an inflammatory reaction, noted by swelling and reddening of the skin. The cat may also develop raised skin sores filled will pus, known as a pyoderma. As maggots feast and the feline’s flesh is exposed to the environment, a high risk of skin infection present itself. A bacterial skin infection may appear as red, blistered, moist, or oozing skin. There is usually a pungent odour.

Myiasis can cause great discomfort and pain to the feline, but cats do not always show obvious signs of pain. A feline infected with maggots may:

Maggots in cats are caused by a female fly laying her eggs on the feline’s open or irritated skin. A true maggot infection is caused by fly strike of either a flesh fly bottle fly, blow fly, or the average house fly. A maggot infestation, myiasis, should not be confused with a bot fly infestation known as cuterebriasis. Bot flies do not have a maggot life cycle and do not directly infect the feline. Myiasis and cuterebriasis are commonly confused as one and the same, but are very different types of fly larvae infestation. 

The diagnosis of maggots in cats is rather simple, as finding the thin, tubular worms on the feline’s skin in the primary diagnostic method for myiasis. However, prior to starting your feline on a treatment plan, the veterinarian will want to obtain an overall health screening to ensure her compatibility with the proposed treatment regimen. 

The treatment goal for maggots in cats is to remove the tubular worms from the feline and tend to the open skin sores. It is highly advised to allow the veterinarian to manually remove and tend to the maggot infection, as incorrect treatment can make the problem worse. The veterinarian will carefully remove the maggots with tweezers and rinse the affected area with an antiseptic of choice. It may be required to clip some or all of the feline’s fur to attend to the myiasis condition. Any open wounds will be properly cleaned and possibly bandaged, followed by antibiotics if necessary. Underlying conditions that may have contributed to the condition, such as urinary incontinence or a bladder infection, will also be addressed as part of the feline’s treatment regimen.

Felines usually have a full and positive recovery following Myiasis, but kittens with umbilical cord infections may have a graver prognosis. As the wounds are healing, the veterinarian will ask you to take precautions against fly strike and reinfection. Prevention methods may include taking the feline indoors or use of a safe, anti-fly strike topical insecticide.

Paying to treat a maggot infestation out of pocket can be a major financial burden. Fortunately, most pet insurance companies reimburse claims within 3 days, putting 90% of the bill back in your pocket. In the market for pet insurance? Compare leading pet insurance companies to find the right plan for your pet.