I HAVE 6 YR OLD BLACK MALE CAT. WHO SEEMS TO HAVE SEVERAL AREAS OF BALDNESS. NOT SURE WHY? ISN'T ACTING SICK, APPETITE IS EXCELLENT STILL A PIGGY. IS OUTSIDE CAT.AND NEUTERED. LIVES IN HOUSE WITH SPAYED YOUNGER FEMALE AND NEUTERD MALE, THEY APPEAR FINE NO HAIRLOSS. NO CHANGE IN BEHAVOIR STILL CLAWS MY COUCH SEVERAL TIMES A DAY! DOES ANY ONE KNOW WHAT MIGHT BE WRONG WITH MY CAT?