Never ever - no baby with a dog ever - so many people think they know their dog because they project being human onto the dog. Their dog is always, the best, kindest, gentlest animal friend they have ever had.
Think about it, you might have the best managed animal in the world - trained to your standards - and I would be surprised if anyone on here tells me they have the best trained children under 4 in the world.That they sit and stay on command and never once object.
2 trained beings, coming together - neither every stepping a foot out of line (unlikely) and then the toddler just decides for the hell of it, I'll pinch that nice juicy nose on that there dog. Dog decides, never been done to me before, hell that's not happening.
The most disturbing thing is the photos post of dogs lying asleep with babies, or protecting babies. Not religious but the old saying 'may the grace of god go with you'. Protection in dogs is like wolves; it is ownership, dominance, not affection and the baby is a thing - the easiest question to answer is 'why take a chance on death, when you don't really have to?' YANBU
(owner of several lovely, kind gentle dogs and lovely, kind, gentle kids)