I just discovered a small lump on my 4 month old yorkies back - right between her shoulder blade and spine. It is under her skin, its not oozing, and she doens't have a microchip. It moves a tiny bit when I rub my finger over it and it doesn't seem to bother Katie when I touch it. I was immediately upset because I love my little baby so much but am now hoping it could be just a cyst that will go away after reading this thread. She had her last vaccinations a week ago so I suppose it could possibly be from that? or maybe a sebaceous cyst? I just took her to the vet yesterday (before I found the lump) because she has been having diarrhea on and off for the last 6 days and the vet told me to feed her rice and hamburger instead of her regular food (puppy eukanuba) and i'm giving her an antibiotic for coccidia.

any thoughts on all this would really be appreciated - thanks!!