What did Bilbo and his companions see on their scouting expedition?

Answer 1

One of them was the fact that none of the dwarves really liked him or trusted him. That is, until after he discovered his Magical Ring.

Answer 2

bilbo faced Spiders, trolls, gollum goblins, wolves, hunger, thirst, dragon, elves, people, and many more obsticles

Answer 3

The loss of their supplies into the river. That led to their encounter with the trolls.

Answer 4

A secret door that they could not open.