I adopt it mother form the start..As I been told, the mother juz deliver baby guinea pig a month ago..But after I bring it home a month, I realize that she pregnant again..at last deliver 4 baby guinea pig include black face..its whole body is white fur, but it's whole head is black fur..and a little brown colour at it's cheek.its caring, lovely and kind.I always saw her cleaning other baby guinea pigs, but other never done this..