Our old bulldog Spanky is so front heavy, she has worn down her front toenails to the quick. They started bleeding yesterday. Question: what can be done to allow the toenails to grow back while still allowing her to take walks? I figure we won't let her walk on asphalt or any hard surface and we will keep her from going on big hills. We've tried booties at PetSmart but they don't fit well on her feet. Any ideas on what we can do?