I had switched my girl on wellness core when I got her, which she was on puppy chow purina from her breeders originally. I lucked out and she took the change beautifully, but she did start to snub her nose at the canned food after a few weeks and wanted to get into the big girl's bowl so I switch her to dry. My older gals also eat her puppy formula (no point in separating) for now when they used to be on a cheaper food. They showed the most improvement. I've been very happy with the results from wellness
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R.I.P. Mick & Mandy (before 2010), Mila - 4/3/15, Chloe - 2/18/16, Kimchi - 6/2/2021