Mast cell tumors are seen with the Boxer breed more than any other dog breed. In many cases, surgery will be needed.
Though the average age for developing this sort of tumor is 8 years old, it can be seen in younger dogs.
Meet Rosco, a super handsome Boxer that was only 2-years-old when the first lump was found.
See what happened to him, how he's doing now, and steps you can take to help prevent this with your own Boxer dog.