My dog had a lump near her teat. and some blood come out, i took her to vets last december and she had the lump removed and tests done which were positive for cancer. The vet said he had removed it all but theres a risk it could reoccur and advised to have all her teats removed. Which is quite a big operation and expensive, she has some small lumps now and ive got to decide what to do. She will be 10 in May. In herself she seems to be well and very active. I hope all goes well for your friends dog.