Hi Nancy D-
/frequently-asked-questions/aafco-nutrient-profiles/
The above is a link to information on AAFCO standards. To date there are only two categories: 1.) Adult Maintenance and 2.) Growth and Reproduction. The growth and reproduction includes puppy and all life stages dog food. There is no official large breed category. Therefore, when a company labels a bag as such, it is their interpretation of what a large breed dog food should be. Since I have large breed dogs, I have looked at large breed dog food and have found that most companies decrease the protein as well as fat in their LB recipes.
So, you just have to read the ingredients and the guaranteed analysis on the bag to see if it fits your needs. I have actually fed my dogs who are three years old food labeled as senior food because I liked the fact that it was lower in fat than their all life stages recipe.
Hope this helps!
