The first year of your dog's life is crucial to their long-term health, which is why they need nutrition specificially formulated to nourish their developing bodies and minds. PURINA PRO PLAN Puppy Medium Chicken Formula with Colostrum and Probiotics combines all the essential nutrients that puppies need, including colostrum - proven to boost the immune system and protect them from common intestinal upsets. These recipes help provide targeted benefits, such as high digestibility and high nutrient absorption to support your pet’s long-term health. Now with PRO PLAN, you can nourish your pet’s microbiome with probiotics to support their gut, immune and overall health.