"Open the door!!!" Thorin bellowed as the dwarves all slammed against the locked door, the roar sounding again louder behind them. Growling, Thorin shoved through the crowd and lifted the latch, so they could all run inside.

As they shut the door, a few of the dwarves shouted out in surprise when the beast's head tried to push through the gap. 
"PUSH!" Kili shouted, and Dwalin and Bofur got behind the young dwarf and helped him to push it shut against the giant bear, putting a wooden bar across it to make sure it would stay shut.
"What [i]was[/i] that?!" Ori gasped, looking at Gandalf.

"That is our host." growled the wizard. "His name is Beorn, and he's a Skinchanger."