Fly strike, medically known as myiasis, is a devastating and potentially fatal condition in which fly larvae (maggots) infest the living tissue of rabbits. This condition occurs when flies, most commonly blowflies (Lucilia sericata) or bottle flies (Calliphora species), are attracted to soiled, damp, or wounded areas on a rabbit and lay their eggs there. Within hours, these eggs hatch into larvae that begin feeding on the rabbit's flesh, releasing enzymes that digest tissue and creating extensive, painful wounds. Fly strike is considered an absolute veterinary emergency requiring immediate intervention, as maggots can cause fatal tissue destruction and toxic shock within as little as twenty-four hours. This condition is tragically common during warm weather months and is one of the most preventable yet deadly threats facing domestic rabbits.
The development of fly strike is insidiously rapid. Female flies are attracted to the odors produced by feces, urine, wound discharge, or dampness on a rabbit's fur. Common sites include the hindquarters of rabbits with soiled fur from diarrhea or inability to groom, areas of urine scald, existing wounds, and skin folds in obese rabbits or those with large dewlaps. Once flies land on an attractive site, they deposit clusters of eggs that are small and often initially unnoticed. These eggs can hatch within hours in warm conditions, and the emerging larvae immediately begin feeding on skin and underlying tissue. As they feed, maggots grow rapidly and burrow deeper, causing progressively severe damage. The larvae also produce toxins that are absorbed into the rabbit's bloodstream, causing systemic shock.
The impact of fly strike on rabbit health cannot be overstated. This condition causes severe pain, profound shock, septicemia, and rapid death if not treated immediately. Even with prompt treatment, outcomes depend heavily on how early the condition is detected and the extent of tissue damage when treatment begins. Maggots consume flesh at an alarming rate, and what begins as a small affected area can become massive tissue destruction within twelve to twenty-four hours. The toxins released by feeding larvae cause cardiovascular collapse, kidney failure, and multi-organ dysfunction. Affected rabbits experience extreme distress and pain. Secondary bacterial infection of damaged tissue further complicates an already critical situation. The psychological impact on owners who discover their rabbit suffering from this condition is also significant.
With immediate aggressive treatment, some rabbits can survive fly strike, but this is truly a condition where prevention is far better than cure. Early detection through twice-daily checks during fly season, combined with meticulous husbandry to prevent the conditions that attract flies, can prevent this tragedy. Any rabbit at risk, including those with mobility problems, obesity, dental disease causing wet chin, diarrhea, urinary problems, or difficulty grooming, requires extra vigilance and protective measures. Outdoor rabbits face higher risk than indoor rabbits, though fly strike can occur in any environment where flies have access to a vulnerable rabbit. Understanding the risk factors and implementing rigorous preventive measures during warm weather months is every rabbit owner's responsibility.
