[carmen in nj]

yes, is normal, when he was with mom and his brothers and sisters, mom did all the diapering, that includes that she eats their poop to keep the whelping and nursery area clean, so is a puppy learned behavior, long time ago a very experience breeder told me to put a sprinkle of the seasoning called "accent" in their food for a few days and that should make him stop. it will not hurt him but will give his poop a nasty taste.
hope this helps and welcome to YT..
hugs,
carmen in nj