Continuity mistake: When Mowgli is with the monkeys, Bagheera is on Mowgli's left, but then suddenly he is on Mowgli's right.
Continuity mistake: The large wound on Mowgli´s right knee is gone in the next days.
Continuity mistake: The wound that Mowgli gets from the tiger on his chest gets smaller at the end of the film.
Answer: It was a threat to Mowgli, hoping to lure him back in grief and to save the younger wolves from the same fate.