My three month old Chihuahua is white with a black place near tail. She also provides a black ears, & black & white muzzle. At about two months she begun producing black places or “freckles” all in the course of her white and on her white muzzle and stomach. https://kameronvpgwm.blogdeazar.com/30428763/the-definitive-guide-to-free-chihuahua-puppies