it depends on how much fat they have...
neither, it is a rodent which is the same order as rats but it is not a rat. Moles are not rodents.
naked mole rats have no fur
A mole rat is a small bald rodent. It is related to the rat also, They spend a lot of their time underground and like the cool and shade.
Moles are fast moving on land, especially when they want to enter there tunnels, moles are 16-18mph at top speed.
Mole rats are rodents, like rats, only they are generally smaller and live in highly organized (ant-like) burrowing colonies in which there is only one queen that gets to breed with the males.