The Life's Abundance is a great food for puppies, adults and seniors.
It is considered the all life stages since it is formulated for all ages.
If you would like a sample, just PM me.
Whatever you decide, just read the ingredients and make sure there is no corn, wheat or soy, and no by-products.
When you change to a new food, you will also want to do it very slowly to help prevent any tummy upset that can occur if you switch too fast.
A complete transition should take from a week to 10 days of mixing in the new with the old food.