We have a 5 year old Maltese who is the centre of attention and a little bit barky. Our LO is now 12 weeks old. We did nothing special before and when we brought DD home. The first night was tricky because the dog sleeps on our bed and the baby was in our room. The dog kept getting up at every noise she made. His barking does not and did not even phase her. I'm assuming she was used to it from when she was in me. The first time he barked, my DH and I jumped to comfort the baby...but she didn't even flinch.
We made sure that we still took our dog for walks every day (when it was nice out). And we have made sure to pay a lot of attention to the dog. We decided that the baby is not allowed on our bed for extended periods, because I feel that our bed is kind of our dog's special place. Hope that doesn't sound nuts.
I find that the only time our dog is jealous is when other people come over and don't pay any attention to him. He doesn't act out aggressively, but he tries to get their attention and then sulks if they continue to ignore him. Often I remind the visitors to say hi to the dog and play with him for a bit.
On the plus side, the dog has been trying to get DD to play with him, lol! Obviously, she's too small for it at the moment. He sits right next to me when I nurse her, and he helps me put her to bed, by sitting on the glider with us when I read her a story and "rock" her to sleep.
Sorry I don't have a lot of tips. But I found the most important thing it to still pay attention to the dog. My friends who have had problems with their dogs, stopped paying attention to the dogs. Many stopped taking the dog for walks or constantly put the dog in other rooms a way from the baby.