Hi there !
I have a 6 month old Yorkie puppy (Bailey) and a 4 year old Mastiff / Rottie (Bella). I just switched the big girl to Fromm's Chicken a la Veg and she loves it ! Then Bailey (the Yorkie) decided that he likes it too !! LOL
So I mix Wellness Puppy with the Fromm's for him. I'm going to switch him to the Fromm's eventually anyway and it's very good food ! Seems to be working out just fine
Best of luck !