wee have 2 dogs, 20 month old keeshond and a 18 month old westy. while we are home now, the dogs are as quiet as a mouse, rarely barking at anything unless someone comes into the yard. as soon as we both leave the house and no one is home the dog(keeshond) barks continuously. i have video tapes the dog on many many occasions now, studied the tapes in details and on average the dog barks a whopping 4000 time per hour, YES 4000 times per hour. IM ALMOST READY TO SHOOT THE THING. im considering giving my neighbours a gun so they can do it for me. the dog barks at nothing. it just runs around the back yard barking at thin air. not a single thing can be seen on the tape as to why the thing is barking. the second dog, the westy is just sitting down near his kennel sleeping while all this is happening being an angel cause there is nothing to bark at. i cannot work out why the keeshond continuously barks while the westy is quiet when we go out.