How does runningbrook die on warriors?

Answer 1

Runningbrook died much like Bluestar. she drowned in the gorge running from a bear. she had particularly short legs, so she only got her front paws on the ledge. the bear fell and grabbed her hind legs and pulled her under.

Answer 2

Runningbrook dies protecting his Clanmates during an attack by a group of dogs. He bravely fights to defend his Clan but is overpowered and killed during the battle. His sacrifice is remembered and honored by his Clanmates.