Police dog howls to imitate patrol car siren

Tornado touches down in Iowa sparking siren warnings

Policeman fooled by bird mimicking siren sound in Oxford

Pet dog howls in chorus with emergency siren test in Minnesota

Chinese Coast Guard sounds alarm on Philippine boats conducting research in disputed waters

Alarm sirens tested in St Petersburg, Russia

Siren alert checks held to 'prepare for enemy invasion' in Russia

Russia authorities cancel alert siren test 'to avoid scaring locals' after Pulkovo airport chaos

Magnitude 5.6 earthquake triggers alarm sirens in Indonesia

Officials apologise after sirens 'triggered by technical fault' alarm residents in southern China

Nighttime tsunami warning sirens sound after Alaska earthquake

Alaska earthquake triggers tsunami warnings as sirens play to residents

Alaska earthquake triggers tsunami warning and sirens sound

Alaska earthquake triggers tsunami warning and sirens

Truck ignores sirens and smashes into ambulance at busy junction