he smuggled them out of the dungeon
he smuggled them out of the dungeon
he distracts the Spiders and gets them mad and finally frees them
He takes it upon himself to save the dwarves, multiple times (from the spiders and the elves most notably.)he was a hobbit who knew how to sneak around places without being seen
When he stabs the big hairy spiders to save his friends.
He rescued the dwarfs twice. After the dwarfs were captured by giant spiders he threw rocks at the spiders, called them names, and led them away from where the dwarfs were hanging in cocoons waiting to be sucked dry. After the spiders were gone, he put on his magic ring, tippytoed back to the dwarfs and used his sword, Sting, to cut them loose and then led them away, sick and dizzy as they were, to safety. Soon after that they were captured again, this time by the elves. Bilbo hung around the elven stronghold long enough to find out where they all were being held and who had the keys. One night, during a feast, the guard with the keys got drunk and passed out. Bilbo took the keys and let the dwarfs out of their prisons, then took the keys back to save the guard from getting in too much trouble. He packed the dwarfs in barrels and casks from the elf warehouse and they were dumped into the river by workmen to be floated down river to the human town. The barrels were formed into rafts by the elves and floated to the town, where Bilbo unpacked everybody at night while the elves had dinner, and they were safe again.
Bilbo demonstrates selflessness multiple times in "The Hobbit," most notably when he offers to take on the role of burglar for the dwarves despite his initial reluctance and fear. He also risks his own safety to save the dwarves from spiders in Mirkwood Forest and from imprisonment by the Wood-elves. Additionally, Bilbo shows selflessness when he spares Gollum's life during their encounter in the dark caves, choosing not to kill him despite the potential threat.
Gandalf knows the Lord of the Eagles. He speaks to them, and the eagles save them. Another reason is because they do not enjoy the goblins.
No. Gandalf leaves the dwarves several times in the book, always returning, seemingly, just in time to save the dwarves from some terrible danger.
He finally proved himself worthy to them, showing that Bilbo could actually get away from the goblins. Before they all thought he was incapable to go on an adventure and get all the gold ,therefore they have a good opinion on him.
At the end of chapter 17 of The Hobbit, Bilbo is in the Battle of Five Armies and is just thinking that all hope is lost for the Dwarves and Elves and Men when he sees an army of eagles soaring toward them. Bilbo shouts, "The Eagles! The Eagles!" But then, a stone thrown by a goblin hits his head on the helm, and he falls down and blacks out.
Because during the unexpected party, Thorin promised Bilbo 1/14th payment of the treasure in return for Bilbo's services as a 'thief'. Though Bilbo did not do much in the way of being a thief, he did save the dwarves from Thranduil, as well as help them gain entrance into the mountain. They also wanted him on the journey because it would have been unlucky to take on their journey with 13 members. At the end of their adventures, Bilbo had obviously earned his 1/14th share, so Thorin fulfilled his promise and sent Bilbo home with a chest of treasure (though it is hinted later on in LotR that Bilbo ended up receiving more).
The lord of the eagles save bilbo and the party, because he knew Gandalf and by doing this he was repaying a favor to Gandalf.