This report was written in an attempt to summarize old and new theories and scientific results regarding FORL (Feline Odontoclastic Resorptive Lesions). Several different kinds of treatment are presented in this study. Among them teeth extraction and crown amputation seems to give the best long-term results. It seems clear that the domestic cat of today have no trouble digesting dry foods without their teeth. The most accurate way to diagnose FORL is by using intraoral dental radiology technique.