Mother deathclaw

Female deathclaws, also called Mothers and Matriarchs, are stronger and tougher than males, as well as fewer in numbers. Only one female is the pack mother at a given time, with another female taking its place when it dies. A pack is led by an 'alpha male'.

Fallout
In Fallout a Mother deathclaw is located in a basement found at the Boneyard Warehouse. She grants more XP than her male counterparts (1500 vs. 1000) and has more HP (320 vs. 250).

Fallout 2
In Fallout 2 a Mother deathclaw resides in Vault 13. Though the deathclaws living there are non-violent, they keep her guarded and do not allow any humans near her.

Fallout: New Vegas
The deathclaw brood matriarchs are much more prevalent in Fallout: New Vegas, partly due to the massive rise in deathclaw population in the years following the defeat of the Master.

Fallout Tactics
In Fallout Tactics a hairy deathclaw Matriarch is imprisoned by Beastlords so that they can extend the repertoire of their telepathic powers and dominate her pups. A later incarnation of her can be recruited as follower.