Is it normal, anyway?!
Yes, it is. Just imagine the situation from the point of view of your Labrador. He is part of the family, often treated as “the kid”, and then, suddenly, a new creature arrives and takes all the attention of his beloved family. It is quite similar to what older children feel, when a little brother/sister arrives. One of the differences is just that the dog can’t speak English 
Actually, if we are aware of this ‘problem’ in advance, the situation can be handled, but it needs consciousness and to be started in time, long before the baby’s arrival. Let’s see how we can prepare our Labrador for the new family member.
If your dog’s daily routine has to be changed with the baby’s arrival (it probably will), you should start changing the rules much earlier, giving him plenty of time to get used to the new set up. This way it isn’t going to be so sudden and shocking. If your Lab hasn’t really been trained before, it’s high time to start. He should learn at least a few commands, like sit, stay, etc. This way, he’ll be easier to handle.
Many families worry about their dog endangering the health of the child, so the best thing to do is to take your pet to the vet, get him checked and get some advice. Get your Labrador used to the new smells, sounds in advance (blankets, lotions, toys). It’s also a good idea, that just after your baby was born, send home a blanket that the baby had been in, so your dog can experience the child’s smell in advance. It is very important to know that your Lab will get a lot less attention from the mother, so when taking the baby home for the first time, the mother should greet the dog, so it is better if someone else is carrying the baby.
It is also a good idea not to leave them alone together at the first times, until your Labrador feels comfortable with the baby, because, for example, it is very possible that the dog won’t tolerate the child’s crying very well in the beginning. You have to teach him that this is a normal sound, and you should motivate him not to bark (with treats, for example).
And the most important rule for last, maybe it seems too obvious, but it’s still worth mentioning: try to give as much attention to your Labrador as you can. The point is that he has to feel that you do care about him. If you keep this in mind, most probably there will be no problem. You could also try Preparing Fido, which is an amazing collection of Baby sounds designed especially to get your dog ready for the arrival of the new Baby!
One of the first problems that usually occurs after having a new pet is housetraining it. It seems like Sandra Bakers knows something that we don’t – she promises to potty train our dog in just 7 days! She’s so confident that she’s ready to give back the whole price of the book, if the training wasn’t succesful!
