I HAVE A BEAUTIFUL FEMALE CAT WHO IS RELITIVLY HEALTHY BUT I HAVE NOTICED THAT SOME OF HER FOOT PADS ARE QUITE SWOLLEN AND ARE ROUGH TO TOUCH AND IF SHE WERE TO JUMP OF THE ARM OF THE COUCH SHE HOLDS UP HER PAW FOR A FEW MINUTES AND THEM SEEMS OK I,M THINKING THAT SHE HAS SOME KIND OF A VITAMIN DEFICIENCY, SO I HAVE CHANGED CAT FOODS,BUT SO FAR THEY SEEM THE SAME? THANK YOU