We got 'em all. Stumbled on to this website after seeing an incredible documentary on kids who were "raised" by dogs. This is the stuff of legends (Romulus and Remus) and many of the older stories have little or no documentation but now there are cases with extensive documentation.
http://www.feralchildren.com/en/children.php?tp=0 (scroll down for list of cases)
Beyond the sensationalism, I think the documented cases show just how profound maternalism is. Some of the stories are incredibly heart-breaking:
Ivan Mishukov chose the streets for his home after he was abandoned by his parents (or, possibly, decided to leave the apartment where his mother lived with her alcoholic boyfriend) at the age of four. Ivan Mishukov earned the trust of a pack of wild dogs by offering them scraps from the food he managed to beg, and in return for the food, they provided him with protection from the winter temperatures on the streets of Reutova, west of Moscow, which can reach 30 below zero (Celsius)... And I never ceased to be amazed at what a blessing dogs are.