My 3 month old Chihuahua is white with a black location near tail. She also includes a black ears, & black & white muzzle. At about 2 months she started producing black spots or “freckles” all in the course of her white and on her white muzzle and abdomen. https://teacupchihuahuasforsale18501.blog5star.com/30699982/new-step-by-step-map-for-newborn-chihuahua-puppies