Naked mole rat
The naked mole rat is a burrowing rodent most known for its peculiar adaptations to living underground. These include limited vision, the loss of most hair, and dominant female and infertile worker females which defer to the dominant female's every need. The dominant female also has sons which compete for mating access to their mother all of this makes the naked mole rats eusocial like bees, ants and wasps. They are the only mammals to adopt this strategy. When the dominant female dies the worker females compete for dominance and when one wins they go through a hormonal change that allows them to reproduce while the other workers stay infertile. The largest domestic collection of mole rats is at the Rio Grande Zoo in Albuquerque, New Mexico.