PET WELLBEING LIFE GOLD 4OZGive your Dog the best chance at a High Quality of Life! You have talked to your vet and they have told you what your options are. For certain cancers there are conventional treatments that may help, but in most cases the prognosis is not good. As with human cancer, the precise causes of dog cancer are not usually known. We know that genetics may be a possible contributing factor, and other factors may be linked to: Diet (e. g. food additives, etc.)