Holistic veterinarians tease out the mechanisms behind chronic problems and then prescribe herbal formulas to address them. Famed holistic veterinarian Dr. Steve Marsden was donating his time doing just that for San Diego senior dog rescues a few years ago to try to reduce their vet bills. Senior dog rescuers have hearts of gold, taking in as many elderly homeless dogs as possible and getting them the care they need, but the costs of that care can be enormous. Dr. Steve reasoned that if he could use holistic medicine to save them money, rescuers would have more money to help homeless pets.