Metastatic anaplastic adenocarcinoma suspected to be of mammary origin in an intact male rabbit (Oryctolagus cuniculus).

A 7-year-old, intact male, pet dwarf rabbit (Oryctolagus cuniculus) was presented for a ventral abdominal subcutaneous mass. Histolopathology of the resected mass was suggestive of a mammary adenocarcinoma. Six months later, the rabbit died from severe dyspnea. Necropsy showed recurrence of the original mass with hepatic and pulmonary metastasis of the anaplastic adenocarcinoma, suspected to be of mammary origin.