Little Bit is a 2 1/2 year old Pit Mix.  She accidentally got pregnant while outside in her own yard by an unknown male dog.  She had puppies without complications, but her owner noticed she had a ulcerated, firm mass protruding from her vulva (female private part).  After diagnostic testing, Little Bit was diagnosed with TVT, Transmissable Venereal Tumor.  It is a sexually transmissable tumor.  Luckily, this disease has an excellent response rate to chemotherapy.