Puppy startled by sonic boom heard across London – video

Video footage shows a puppy jumping when it hears a sonic boom that shook London at 4am. The dog, named Poppy, was sleeping when it heard the loud bang, caused by RAF fighter jets going supersonic. Sonic booms generate huge amounts of energy, which to the human ear can resemble an explosion.

• Sonic boom: loud bang that shook London caused by supersonic fighter jets