Bristlefrost  nodded,  but  before  she  could  move,  another  convulsion shook Bramblestar. He reared up out of his nest, all four paws lashing as if he was trying to attack an enemy. His head was thrown back, his jaws stretched wide in a terrible silent wailing. Then he went limp and collapsed to lie unmoving among the moss and bracken.

Lost Stars, Chapter 16