nelanne johnson answered 3/15/2009 My Cat Has A Lump Above Her Front Left Leg Which Moves It Around When You Touch It. It Does Not Seem To Cause Her Any Pain When You Touch Or Move The Lump Do You Know What This Is? After my cat got her rabies vaccine a large lump was left on her leg. If it starts to grow/devolep more than I suggest you take her to the vet, my cats bump started to reduce in size within a month and after about two it wa gone