Hi everyone. We are concerned about our beloved dog Bo who is 8 years old and has about a half dozen lumps all over her body, mostly on her back and chest. The vet said it's normal for dogs as they age. He aspiratied three and found nothing, they're just fatty tumors and we shouldn't worry. My husband feels she started getting these lumps after changing her dog food from Earthborn Holistic to Purina. My husband does a lot of research about the food. First grain free was supposed to be the best, then he read and saw on news it could cause heart disease. That's where the vet suggested Purina which is also FDA recommended. So, what to do? Who do we trust. I know these lumps don't hurt her but is it the food? Is it aging? Any suggestions welcomed!