So today the 3 new kids went to the vet and upon examining Nina's tumor the vet said it was growing inward and had little nods or bumps on it and she also said that if we didn't have it removed rather soon that she may not be able to remove all of it...So we scheduled her surgery for next tuesday..of course the vet couldn't say for sure whether it was cancerous but the bumps concerned her and the way it felt like it was growing inward...She said that she would say it is a mammary tumor but again she had never felt one like that before. Anyone had a mammary tumor like this? We are guestimating that they are all 3 between 15 to 18 months old with Jack being maybe slightly older then the other 2.