Keep him warm, either stuff a box full of CareFresh or soft hay or place human heating pad on low beneath his cage. He needs to be in the dark since pups are sensitive to light. KMR brand works well, offer bene-bac or pure yogurt to help digestion. You can buy liquid B-12 and place 1 drop once a day in his KMR to give him a boost if need be. Overall he needs warmth and fed around the clock. Try to introduce to him to baby foods lacking rat toxic items plus solids as soon as possible. If he begins to sneeze or cough you may have a hard time getting him to survive. I use VetRx and childrens cold medicines with my weanlings and adults. I do not know how the VetRX will work on a pup but the childrens cold medicine can be given with his KMR. 1 - 2 drops only.
Hope it works out~







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