Definitely see the vet and it could be a mammary tumor but with it being in the center and up toward her chest, it could be something else. A lot of cases of mammary cancer occur down by the 4th and 5th set of mammary glands as far as I know.
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |