My 2 year old bulldog always has her under pads red. There is no blood, she licks them all the time. I have removed area rugs, changed floor cleaners, given her foot soaks, clean her paws after she comes in from outside and last allergy medicine. Other wise she is healthy, eats well, sleeps well, her wrinkles are ok and the ears are clean. The only thing I can come up with is she is allergic to grass.