There are conflicting opinions on the origin of cervical root resorption. The purpose of this study was to examine histologically whether cervical root resorption begins as an inflammatory process. Ten roots in five cats diagnosed with feline odontoblastic resorptive lesion (FORL) were used. The specimens were decalcified, sectioned at 6U intervals and processed for histological examination. Staining was with hematoxylin, and eosin and Masson’s Trichrone stain. The specimens were examined under light microscope. Results showed: (1) No acute or chronic inflammatory cells were present, (2) Replacement resorption i.e. bone and bone-like material were deposited directly on dentin (ankylosis). No cementum or PDL was present, (3) The pulp of teeth remained vital and uninflammed, (4) The gingival sulcus remained at the cemento-enamel junction. In this presentation cervical resorption begins as non-inflammatory process and is identical to human replacement resorption (ankylosis).