Pit Bull Growls and Snaps at Her Puppies. Pit Bull Mom

Mia's 4 week old Pit Bull puppies were born on July 10th 2010. I gave her a treat to occupy her while I was photographing her and she growled at her puppies and then 01:47 "snapped" at them. This behavior is called "food aggression" and can be treated.
https://www.dog-obedience-training-review.com/dog-food-aggression.html