Beleived to be the result of gene-splicing Kodiak bears with maladjusted lab rats. Mole rats have sharp claws and even sharper tusks that they use to tear great chunks of flesh from their prey. Luckily they seldom run in packs larger than a dozen or so. They can be found all across the Wasteland surviving in even the harshest conditions, mole rats get their name from the tunnels they dig preferring to make nests below ground in caves and cellars, they burst out of the floor attacking any travelers they find. 

Molerats are the result of an American government program carried out by West-Tek. codenamed Mission Cloacina, the aim was to develop an invasive lifeform that could be planted in China, where its aggression and fast breeding would help undermine the Chinese war effort. It is believed that a genetic "kill switch" would have been included to help the Army clean up the rats after the theoretical fall of China.