Leiomyosarcomas are much less common. .
Transmissible venereal tumour May occur around the vulva and in the vagina in the bitch. The same tumour occurs on penis and prepuce of the dog. Uterine Adenocarcinoma Endometrial carcinoma in rabbits is relatively common and is probably the most common tumour in older animals. There is often local infiltration as well as distant metastasis. Endometrial carcinomas are encountered occasionally in cattle in slaughter houses but are rarely associated with clinical disease. .