Can anyone please offer me help with my dog who spends most of her day barking at anyone who walks past the gate. She didn't really used to do this often, but lately she does it more & more.... Sometimes she barks at things that aren't even there??? Last night she was barking for a while at a cat who was just sitting on the wall. My husband did get up & tried to quiet her down by calling her to lay down. Today I have received a letter from one of the neighbours who have mentioned my dog is becoming a nuisance in the neighbourhood.... HELP!