Is this an indication to feed less?
I just switched Juno to Acana a couple weeks ago and her poops are pretty large now. My mom has even said something about it and I wouldn't expect her to notice/care.
She's 50lbs and gets 3 cups a day. She's gotten 3 cups on every food she's been on as an adult (Blue Buffalo, Natures Domain, Fromm, Natures Logic...). I don't know if I should try cutting back a bit and see if that helps? She doesn't gain weight and she's lean enough as it is so it always worries me to try it.... but 3 cups to me has always sounded like a lot of food for a dog her size. It's not even like she's that active.