Yunnan Baiyao twice a day and one anti-tumor pill daily has given my Golden Retriever and I over a year of unconditional love, and still counting.  She was diagnosed with a very large (grapefruit-sized) hemangiosarcoma tumor on her liver vessels a year ago and given 6-8 weeks survival, surgery or not.  We chose no surgery and here she is, 11 1/2 yrs old, spunky and chipper when she isn't having an internal bleed.  The bleed stops (thanks YB)and within 12 hours she's pretty good again.  My oncology vet and her regular vet are astounded and call her the miracle dog. Her tumor has not changed and w/o expensive studies we can't tell if there are any new ones (spleen, heart, etc.).  My vet has ordered YB to keep in the office for her next poor creature with this deadly diagnosis and is recommending it, retelling this great story.
PS:  We affectionately call it "Yunnan Bow-Wow!"  I put the caps on top of her food and she eats it w/ her meals.