My pup is only 13 weeks but I switched him to Fromm large breed puppy as soon as I got him at 8 weeks ( well, I did the switch over 10 days) anyway, I was never thrilled with his poop- it was always " soft serve" despite adding pumpkin and a couple of other suggestions. I had decided to put him on the Fromms allstage beef frittata at around 10 1/2 weeks. There's a lot of different theories on using large breed formula( bulldogs are NOT considerd large breed, but if you read their largebreed puppy food label, it says to use it if your adult dog will exceed 50 lbs,)so I opted for that one with the advice of my vet because he says large breed food actually slows the growth down and because bulldogs grow so fast, that will help in the long run. Anyway, just as I was ready to start the transition, he came down with some " puppy bug" and I really messed up his digestive system with way too many changes! I really wanted to give Fromms Grain Free a chance so we took him off ALL food except boiled beef and white rice ( even for his treats) and the vet gave him medicine to help heal his digestive tract, we did this for 7 days and then SLOWLY added Beef Fritatta kibble. It has been 6 days and I am just now getting to about 1/2 cup of kibble with the rest (1/4 cup) of beef and rice. Good news is he is doing great on the Fromms Beef Fritatta- stools are nice and solid. I truly believe he was not tolerating the puppy food. So bottom line is do the transition slowly. The beef Fritatta is part of the 4 star grain free line which is interchangeable with all other 4 star products with no need to transition. There are 9 different choices. The puppy gold is good too, there are many here who use it; it has chicken in it, as well as barley and oatmeal which the 4 star does not have. It's really a matter of choice- a lot more choices with the allstage 4 star products, but if you really want a puppy food, go with the puppy gold. Mine just wasn't doing great on the puppy kibble. I am much happier ( and so is his digestive system) on the beef Fritatta! Good luck! Keep us posted!