Actually there is no tangible proof that dogs are seeing spirits or that spirits even exist. So to answer this with a definitive YES would be wrong. The simple fact is no one knows for sure. It is true that dogs have better senses than humans and can also see and hear in spectrum that we can't. But it is an assumption or your personal belief if you think that your dog is barking at a ghost.
People have been said to communicate with the unknown so it would only make sense that dogs are capable of doing the same thing but to a much higher degree with their broader senses. So since you can't see it or hear you assume it's a spirit.
Some will.
they see ghosts
they see in black and white
Yes, dogs do bark. They bark when they see something or when they feel aware of a presence. "Bark Bark" "woof woof" says the dog.
See a vet. This could be serious.
because they feel insecure
Yes, it is said that dogs bark at thin air and snarl if they see spirits. I know it is true because my dog did it as well.
They like to play and be playful. Dogs also want you to play with them and they are happy to see you.
I hear that dogs don't really bark at ghosts, but at the devil. Cats are the only one who could see ghosts. A dogs hearing range stretches beyond ours, which is why we sometimes do not know why they bark.
Yes, all dogs bark.
Yes dogs can sense spirits.
all dogs bark unfortunatley