When jerboa is about to have the baby, place the mother in a one by one room or fenced in area. Be sure to have plenty of berries, either on you or in a feeding trough right by the pen. The small area will help with making sure you get to the baby in time before it dies of starvation.
Found in dungeons on mobile, in the quest of the poacher dungeon. We now have a breeding pair of these little cuties. Kill then revive, Warning the torpor goes down fast. Use an electric prod, because anything else will kill it.