Replied on your other thread -
I have two dogs.
I was advised that I should start carrying around a doll, so that the dogs could get used to me giving something else attention. I didn't do it, as I didn't have a doll, and I had too much else to think about!
What we did, however, was implemented when the baby came home. We brought him in, and left him in his car seat, but on the floor. My other half went and got the dogs, told them "steady" before they entered the room (we made sure they learnt this command in my pregnancy!) and they were allowed to sniff him, with us reminding them of "steady".
They've never been told off for going near the baby, but we make sure they realise he is "above" them in our family hierachy - I sit down on the settee with him before they're allowed to sit next to me. He eats before they do. They're not allowed to push in for cuddles when I'm holding him, but I'll call them to me, or us, for cuddles and strokes as a reward for waiting. If they go for one of his toys, I distract them with one of their own, and praise them when they play with that.
I swear that one of my dogs realised I was pregnant - she became more gentle with me, and started 'guarding' my bump if she heard people coming down the path.