I just wanted to let everyone know that Chloe had surgery today and the vet removed all 4 tumors. It turns out they were not fatty tumors, but hair follicle cysts. He said here skin is very oily and this is probably what caused them. I am so relieved! Now if I can figure out how to help prevent them. He did suggest bathing her more often. I really didn't get to speak to the vet, but plan to when I take her to get the stitches out. If anyone has any experiences with these type of cysts and any preventative measure please share. Thanks for the replies. You can never be too careful.