Its just a dog.
If you train it to be bad...it will be bad.
If you don't break it of its bad habits it will not stop repeating the offense.
All dogs have the potential, but this seems absurd.
A slap on the nose and 2 year olds can say NO well.
If a child and a puppy are raised together by the age of two, the dog hardly ever leave the childs side, adores the ground the child walks on, and would defend the child to its own death.

The mother is to blame, not the dog.
How short is a short time?
I.E. "The mother told Lockport Police that she left her two-year-old unattended for a short time"