When you are about a few months to deliver a baby, you need to create a nursey room and train your dog to keep out from it.
You can start to prohibit her access to the nursery room by closing the door at night, or when you are not at home. If she assumes
that room is her territory, she will not be easily put out. Gradually you may add her playtime to be at night when the door to
the room is closed. After a few weeks, try to keep her out while you are in there too. You have to establish the thinking that
the nursery room is not a 'puppy zone' and you will not have a bad time changing diapers.
Your dog might get irritated with baby cries, and it might bite the child. It may be distressing for a dog who never heard it before. Around a month before delivery, play recording of a baby crying, and other noises that baby tend to make. Play these noises a little while everyday, your dog will get used to the sounds and take them for granted and so will you. Start playing the recording at a low volume, and gradually raise the volume to a normal level.
When you have only a few weeks left, start to sprinkle baby powder around the house to help her get used to this smell.
You may borrow your friend's babies, to make it as the arrival of this little human being is not such a big change.
You may borrow unwashed baby blankets and have them lying around. This is also a good way to get your dog used to not lying
on a baby blanket draped along the sofa or chair as well. If she looks like she's about to get comfortable on a baby
blanket on the floor, a firm "Off" or "No" and re-directing her to an appropriate place to lay down will set a pattern,
and soon she'll be avoiding blankets that may hide a baby in the near future.
Your dog will be jealous with you returning home with the baby. It's perfectly natural to feel a little left out when there's a new arrival, but you can easily reassure your dog that she hasn't been displaced in your affections. Make it a habit to play with your dog too, even when the baby is out. Pet him while you are feeding the baby, or while the baby is looking around the floor on a blanket. Be careful not to push your dog away when his curiosity gets the better of him and he comes to sniff your new bundle. Ignoring him while the baby is loose will create problems as your dog starts to associate the baby's presence with his neglect.