Annie29, I take it you aren't what is known as "a dog person" - those of us who are know that dogs and babies can live perfectly happily in the same home. In my home, I have two resident dogs, aged 3 and 7, neither of whom had shared their lives with small people, never mind babies, until a year ago. All is well. The dogs were introduced to the babies properly, i.e. scent before baby - after which all has been carefully managed by the two legged adults. I would never leave my dogs alone with my grandchildren, aged 9 months and 3 weeks - it wouldn't be fair on any of them. The 9 month old loves the dogs but there is a risk he'd pull a tail or an ear - the dogs definitely know the babies are much higher up the list of importance than they are.
There is so much evidence about the benefits to children of growing up with animals, and I put dogs high on the list of appropriate animals - dogs know about pecking orders and respect in a way that cats, for example, don't either know or accept.
It doesn't really matter about breed (though there are some breeds I wouldn't entertain) it's more about the people around the dog and the way the dog has been brought up. Same with children, children who tease dogs, run at them, behave in a ridiculously excited manner, or torment dogs may find themselves responded to in similar fashion