Hi, I have some pups that are 3 weeks old. And one pup has white tips on her back feet. And the boy has a white spot on his chest. The boys spot is already starting to fade. So i dont think it is that big of a deal. I think they go away. But i do wonder why the spots are there? I told my shih-tzu (Fitz) that if he wasn't fixed i would be very suspicious!!