That's a really good question. And, I have no idea! lol We switched from a puppy formula to an "all life stages" food sometime during his first year, so I never researched this.
I'm sure someone else will know.
__________________ The fullness of our heart is expressed in our eyes, in our touch, in what we write, in what we say, in the way we walk, the way we receive, the way we need. -Mother Teresa ( RIP Gizmo 3/9/07-8/18/12)  |