Feline mammary fibroepithelial hyperplasia (FMH) is a benign, progesterone-dependent mammary disorder that predominantly occurs in young intact female cats during or shortly after estrus. This condition is characterized by rapid and diffuse mammary enlargement, which often leads to discomfort and local inflammation. Aim: This study aimed to describe the clinical, biochemical, and therapeutic aspects of FMH in cats and compare the outcomes of medical and surgical management approaches. We evaluated 40 intact female cats diagnosed with FMH between 2023 and 2025. The clinical data, hormone levels, and imaging findings were recorded. Twenty-five cats received cabergoline (5 µg/kg orally once daily), and 15 underwent ovariohysterectomy (OHE). Serum progesterone and estradiol levels were statistically analyzed and measured.