Blind mole rats are rodents in the family Spalacidae, but are unique enough to be given a separate subfamily, Spalacinae.
Blind mole rats are truly blind. Their very small eyes are completely covered by a layer of skin. Unlike many other fossorial rodents, Blind mole rats do not have enlarged front claws and do not appear to use their forearms as a primary digging tool. Digging is almost exclusively conducted using their powerful front teeth, which are separated from the rest of the mouth by a flap of skin. When a blind mole rat closes its mouth, its incisors are still on the outside.