We've fed both Prairie and Chicken Burbank Potato- chicken-based foods tend to give Jackson softer/bigger poo though so we stick to the other formulas now.
But yes the grain-free's (Wild Prairie, Grasslands, Ranchlands and Pacifica) are a lot bigger than Fromm. Most of Fromm kibble look like tiny cat kibbles to me, lol... They are not like ginormous... but bigger. My friends 4 and 6lb yorkies do absolutely fine eating it. The Chicken & Burbank is a bit larger than the grain-frees, but maybe a bit more flat. Duck & Pear and Lamb & Apple are smaller.
But we've always had great results with Acana. He's in great shape, very minimal eye boogers, his hair is shiny and soft, his poop is typically 2x a day and small and formed hehe.
