Our 1 year old female Maltese has the exact same issues that seem to have started recently during a period of stress in our house. We have been having our kitchen renovated for the past five months and it has significantly dislocated Emma, on top of the noise and the in and out traffic of contractors. It all seems to have come to a head last week when both my wife and I had very stressful weeks at the office, tied into some plumbing work in the house that led to air bleeding in the pipes and very loud noise. For days, Emma seemed like a shell of herself - blank stare, depressed, just laying around, hardly eating, not playing, no emotion at all except for the shaking. We finally brought her to my parent's house in the country for a week and the improvements seem almost immediate - a lot of attention from grandma and grandpa, quite, etc. We hope that she gets back to normal once she returns and the house is done. We hate to think that we have lost her forever in some emotionless vacuum.