Food & NutritionShould I switch dog food? Purina vs Proformatrin for heart health.
I think Purina is better. They run their own feed trials, meet AAFCO standards, and have veterinary nutritionists on staff. They are only one of four food companies that have this (Royal Canin, Hill's Science Diet, and Iams {Eukanuba} are the other brands).
Updated on September 24th, 2025