Feline eosinophilic granuloma is a disease that cats may develop. It is usually caused by a bacterial infection and often appears in the cat's mouth. Symptoms of this disease may include eosinophilic ulcers that are aggressive to surrounding tissue.

At the same time, eosinophilic plaques may appear between the toes, the base of the tongue, etc.; as well as local tissue hyperplasia, swelling, and hyperplasia The structure is solid and there is usually no sense of fluctuation.