I HAVE A OLD VERY SMALL MALTESE SHE IS UNDER 4LBS AND ONE DARK BROWN SPOT UNDER HER WHITE SKIN FUR HAS TURN INTO MANY SPOTS..
WHAT COULD THIS BE \?.....OH SHE IS OVER TEN YEARS .. VET SEAMS TO NOT ANSWER WHAT IT IS. JUST SAY' KEEP GIVEN HER VIT.
Maybe it is just age spots?? I have no idea b/c I would need to examine your pet to make a diagnosis. If your vet examined your pet and is not worried then I would not worry. You can always go for a second opinion with another vet or a specialist. vetcare