Tambear - If you put the dog outside when it's used to being in, the dog will come to resent the child which could be disastrous. You should try not to affect dogs routine too much as it is part of the family too, but train it not to go in the baby's room if you're worried. As far as hygiene goes, as long as the dog is bathed each week or fortnight and is up to date on its vaccinations, there is really very little concern for the health of your baby... in fact, exposure to pet germs helps the baby to build up a tolerance.