Jalil heard the howl, as faint as it was. He turned to Rudder, aware that the pup wasn't to know about the disaster. Jal decided to just come out with it- the faster he told Rudder, (hopefully) the faster the news would heal.
'Up at the den...' He began, carefully. 'Up at the den, there was a great shower of rocks. Sometimes in the old times the mountains used to become angry, and when they were angry they would spit out their teeth at the world below.' The words flowed easier, as the old tales of his mother and grandmother seemed to come unbidden out of his mouth. 'One of these rocks landed on our den, and..it killed everyone inside. We are the only Uutar left..me, you, and our packmate Kaaili.' 
'Now we must go behind the treeline, to hunt and, to find out who that howl belongs to.' He looked at Kaaili, hoping he had explained well enough.