It's tricky for women to raise children in the wild. Especially once kids get to the ages between 2.5 and 8 when they'll want to explore their ever changing environment but mom still has to look for plants and berries and keep an eye any dangers and carnivores that are around. Dogs protect their own little ones in the wild and readily help to keep an eye on the human youngsters in the same way. Further more dogs will sound the alarm when needed. It's one more helping, important hand, that dogs bring to the bargain.