I have two dogs and one barks at anyone that comes to or near our door (or house).
Sometimes that babies are not fazed by barking but sometimes it startles them. It may or may not result in them waking up.
So I guess I'm not bothered if the mailman comes and rings the doorbell because my dog likes to bark.
Do you feel like your LO does not mind being startled or awakened because they are already sensitive to your dog barking?
Though, my babies are 6 months and usually they can go back to sleep. Maybe later I'll be annoyed with my dogs and or unexpected visitors.