African mole-rat (Fukomys sp.) in a cardboard tube. Mole-rats are subterranean rodents.

African mole-rat in care (Fukomys sp.).

A familiy group of our giant mole-rats (Fukomys mechowii).

 

Reproduction in captivity: a mole-rat mother nursing three pups.

The Coruro Spalacopus cyanus, a South American relative of the guinea pig.

Like mole-rats, Coruros are highly social subterranean rodents.