They will attack the male , and even kill her mate if he is not housed separately after mating has taken place .
Breeding fat - tailed gerbils in captivity can be hard , as the females can be very aggressive when they are pregnant or nursing pups .
gerbils will attack the male , and even kill her mate if he is not housed separately after mating has taken place .
Breeding fat - tailed gerbils in captivity can be hard , as the females can be very aggressive when they are pregnant or nursing pups .