It can be quite worrying for expectant owners who don't know how their hound will respond to a new baby.
Writing for The Telegraph, veterinary surgeon Pete Wedderburn advises people in this situation to plan ahead. An idea is to carry a doll around the house so that the canine can gradually get used to their owner spending less time with them.
The website soundtherapy4pets.co.uk has a range of baby noises for owners to download to familiarise their pet with the new sounds, Mr Wedderburn adds.
As some pets are uncomfortable walking next to wheels, the animal expert suggests that owners borrow a stroller so their pet can practice walking next to one. What's more, after the baby is born, it's important to bring something back from the hospital for the pet with the newborn's scent on it.
Owners should spend quality time with their animal companion once the baby comes home, praising him with things such as dog chew toys when in the presence of the baby.
Mr Wedderburn warns that a dog and baby should never be left alone together unsupervised.