In the second video she is talking about how ingredients are listed on the bags of dog food. Then goes on to say Meat Meal can be ROAD KILL and makes it sounds as thought they are tossing entire carcasses into a grinder. At 13:23 she included says that meat meal could be recycled cats and dogs from kill shelters. Then goes on to say snouts, bird feathers, hooves.
For our 8th Grade trip our school going to the Kellogg cereal factory and taking the tour of the plant. From what I have read, dog food is make similar by extrusion. It's ground together with the other ingredients and then made into whatever food they are making i.e. dog food, cereal, pasta etc. Do you know anything about this process?
From what I was able to read it seems that MEAL is a better choice because it is more dense than meat. She then talks about how ingredients are listed on the dog food bags by weight. I would think that there is a recipe used so that the end result of the extrusion process would result in the protein % of the kibble. The way she is explaining the process is confusing or even vague.
I did find this explanation
Chicken and Chicken Meal: What are the differences? Blue Seal