A case of secondary feline mammary tumor described and discussed with its clinical features similar to inflammatory mammary carcinoma (IMC) in this paper. In cats, there were only very few cases of IMC reported until now. A 14-year-old, longhaired female cat was presented to the clinic for the rapid onset of erythema, local pain and warmth of the inguinal region, with a mild exudative haemorrhagiculcereted lesion in association with a good-defined underlying mass. The cat had bilateral mastectomy surgery four years ago. Cytological findings were highly associated with inflammatory mammary carcinoma. Due to diffuse pulmonary metastases of the cat surgery could not be suggested as a treatment. In conclusion 1) feline IMC could be useful as an animal model of human inflammatory breast cancer 2) mammary cancer patients should be approached cautiously after even bilaterally performed mastectomy surgeries.