You can tame them in gen 2 just go the the cave for the boss fight near the terminal they spawn just got to lure them out the ground then lure them in acid Pitt (under the terminal) there it will take damage from rising acid. when its almost dead lure it back out the pitt if it glows red /pink aprouch with shield it wil impregneren you.

Get out of there and kill shit.

when giving birth get in to smal room with lot of Meat

Enjoy new reaper.🙂