Arie is one of our dogs and he is a lab mix – he is a rescue. We have had him for 10 years. He has put on weight and he has one of those fatty tumors that we hear about and we have taken him to the vet .

They said yes, it was a fatty tumor but they never aspirated it to look at the cells and confirm. Should we ask that they do that. We are willing to pay for the lab test. We just want to make sure. If it is just a fatty tumor, will it go away if we are able to lower Aries weight by dieting (not having a lot of success on the diet but will continue to do so. He is a large medium dog who probably should weigh about 70 lbs max but he weighs about 100 lbs and as he is getting older we are worried about and want to get his weight down. We feed him Fromm Senior and Lower Activity dog food but I am afraid we are probably feeding him still too much especially since my husband is bad about sharing scraps from his meal. What would be the approximate cups of food he should get a day and is it better to feed him half in the morning and half in the evening. We have 3 other rescues but they are smaller and seem to be fine. Also if the tumor is just a fatty tumor would it still be better to have it removed or does it really matter? Thank you so much.