Experts believe the animal was protecting its baby from a perceived threat by Katy Williams and her son Finn when they surprised her, Fox News reported.
The Sun is reporting that Finn may have permanent brain damage as a result of the attack.
Both he and his mother have undergone surgeries. Family members say Katy Williams was put into a medically induced coma because of multiple injuries, The Sun reported.
Both were listed in critical but stable condition in Johannesburg.