Also known as TOV or 'blacks', the black velvet is probably the strongest mutation out there. Many of these animals are starting to rival the standards. This is my personal favorite mutation colour and was the colour of my first chinchilla. A strong black velvet should have full veiling, extending from the face mask to the base of the tail and down the sides towards the belly. A crisp white belly and a good strong blue hue. The black velvets also seem to excel in size and confirmation.