Do dogs see things we do not? My husband died 10 months. Ago in our liv. Room. every now and then my little dog will stop what she is doing and stare towards the side sofa, her head goes back and forth AS THOUGH SHE IS FOLLOWING SOMETHING WITH HER EYES, then she growls, and barks, what do you think is happening

Well.. some people believe that dogs can see spirits.. It is also said that dogs are more sensitive to spirits.

Maybe she is noticing something that you cant/wont see.