My three month previous Chihuahua is white with a black location near tail. She also features a black ears, & black & white muzzle. At about two months she began producing black spots 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