Cutaneous myiasis in three obese cats.

Three cats presented with painful, putrid smelling ulcers on their thighs and around their tails. Examination of the fly larvae found in the ulcers revealed that the cats suffered cutaneous blowfly myiasis caused by Calliphora erythrocephala larvae. Obesity was one of the predisposing factors for the development of this parasitic condition. After therapy with ivermectin, the larvae disappeared within two days.