Pyrus wasn't always a member of the Silver Skies pack, but he was driven from his former home when a wolf usurped their leader, whom he'd supported. He barely escaped with his life.
He had wandered some time as a loner, barely scraping by, until one evening he saw the bright orange glow of a raging fire in the distance.
He was about to turn tail and put himself as far away from it as possible, but the frightened howls of wolves crying for help stirred him to action and he instead ran towards the fire. He used his own howls to give those who needed it a direction to run, and dove in to help support and get out any wounded wolves he could find.
When all who could be found were on the far side of the river from the flames, Sedgeheart, the leader of the pack he'd helped save, praised him and offered him a place among her pack. She offered him a new name, so he could fully part ways with his past, and appointed him as a scout for his keen senses and quick thinking.