Black teeth may remind you of cavities, but in the case of fur seals, it is a sign of good health.
Black teeth are caused by the presence of good bacteria that produce black pigment in the mouth.
When they are born, their teeth are white, but as they age, they turn black.
Black teeth may remind you of cavities, but in the case of fur seals, it is a sign of good health.
Black teeth are caused by the presence of good bacteria that produce black pigment in the mouth.
When they are born, their teeth are white, but as they age, they turn black.
