

Darkess on premolars
Asking if anyone has had this with their chi's? She is year and a half, I brush her teeth and she gets chews daily. Not tartar or buildup, does not come of with brushing or wiping with cloth.
I'll be making a vet appointment soon mut she eats normally and clearly enjoys chewing so it does not seem like she's in pain, at all. 2nd image of her beautiful incisors and canines.