I WOULD SAY WORMS RIGHT OFF THE TOP OF MY HEAD, AS HE SOUNDS AS THOUGH HES TOO YOUNG FOR A THYROID PROBLEM.
I WOULD GET HIM IN, HAVE HIM TAKEN CARE OF AND THEN BRING HIM BACK,
IF YOU COULD GET BOTH, THAT WOULD BE GREAT AS THE FEMALE MAY BE HAVING LITTERS, MAYBE YOU COULD FIND A SHELTER FOR HER TO BREAK THE CHAIN OF KITTENS.
GOOD LOOK WITH SKINNY AND HIS GIRL FRIEND.