your baby is so cute!!! he looks much like my Charlie, Charlies ears are larger than most yorkies I see and his too flip down, He moves them like antennas LOL when you talk to him he has just 1 ear that he will raise up . Charlie is silver on his tan on his face head and belly but his back and tail are a dark silver gray I cant tell a bump but a visit to the vet should be done if you dont know anything about his health.