9+ months old and blood in stool. is never a good thing. Not knowing why it is happening is the main problem. Normally I would suggest a hard fall, etc. If he was my child I would take him to the chiropractor first thing and see what he advised, unless he was bleeding too much. There are simple ways for an adult, but not much written about babies for internal bleeding. There is a milk formula in Christopher's that is easy and stops intestinal bleeding, but was always used for adults. When in doubt seek medical advice, especially with babies. I am sure they will be quite concerned to make sure no one has harmed him.