A person should never confront a growling dog. If there is no way out of it, turn your back to the dog and say no.
Look that dog is Growling. He does not like you.
Take it to a vet or a dog physiologist
a dog can see ghost's, so he might be growling at one telling it to get out. but if he is growling at the ceiling, he might be playing.
Snarling and growling
Snarling and growling
bad luck
|/ |\ | \ | \ ILL IT!
I would say yes because growling is one of the few forms of "verbal" communication dogs possess. Most forms of growling serve one purpose - to get someone or something to back off. So just back away and let your dog be.
A dog protects itself by growling if endangered and then go in to bite if it feels threatened.
By growling or just randomly biting things
The dog was so angry it was snarling and growling.
Your dog needs socialized if it is doing this. This is also common in small dogs.