Our two dogs adjusted pretty well to the new baby (five years ago...) but we did use baby gates to stop them having access without us being there. I'd encourage you to set them up before you bring the baby home and leave the pram and baby gear around where they can see it and get used to it.

If it's any consolation re dog hair, germs, etc, babies that are around pets end up with stronger immune systems. (FWIW DD is the healthiest kid I know - she has barely been sick in five years!) I vacuumed every day where DD would play on the floor and sleep when she was a baby, to get rid of as much fur as possible. But that was in a carpeted, small house, whereas now we have hard floors and more space, so it won't be as much of an issue.

Unfortunately one of our dogs died earlier this year (after killing a whopping great poisonous snake in our back yard), but DD and our other dog just adore each other. She's 'played' with him since she was about 7 months old. They're also great at removing food scraps from under the table/high chair when you have a toddler! I call them furry mops.