The wolves would smell him out and find him, even if they couldn't see him.
The Ring can make you invisible, but it certainly cannot save you from danger, especially from wild wargs with an exceptionally good sense of smell.
Because he did not want the dwarves to know he had it. The ring makes him greedy, and even Gandalf couldnt get it out of him until after his adventure.
Many people knew that the One Ring existed, but they didn't know that Bilbo had it, except for Gollum. Gandalf suspected that Bilbo had the ring, but he wasn't sure.
Bilbo gives his cousin Frodo the One Ring after being hard pressed to do so by Gandalf. In fact, Bilbo almost drew his sword on Gandalf.
If it is in the Hobbit, it is to get Bilbo started on his adventure. If it is in the Fellowship of the Ring it is to have the ring returned to the mountain to be destroyed.
Bilbo asks Gollum "What's in my pocket" (the Ring) and Gollum cannot answer.
It is part of the ring's nature that the current possessor will always want to keep the ring to themselves, and not wish to share any of its knowledge or power.
The wolves would smell him out and find him, even if they couldn't see him.
In chapter 5; Riddles in the dark; bilbo finds a ring.
The ring would change size to fit the person that it wanted to wear it.
Many people knew that the One Ring existed, but they didn't know that Bilbo had it, except for Gollum. Gandalf suspected that Bilbo had the ring, but he wasn't sure.
Bilbo said, talking to himself, "what have i got in my pocket?" (it was the Ring). Gollum thought it was a riddle and Bilbo decided to make it one. he gave Gollum three chances to guess and gollum lost after four. then gollum went "to get something" (it was the ring), and Bilbo thought he was abandoned and left with the ring on. Gollum thought Bilbo knew the way out and he wanted to follow him, realizing Bilbo had the ring. Bilbo saw Gollum racing towards the gate and followed him to safety.
He was so pleased by their praise at the way that he so cleverly snuck into the camp without being seen, that he decided to keep the Ring out of it for a while.
Because Bilbo won it in his game of riddles with Gollum.
Bilbo Baggins
it makes him invisible
In the Lord of the Rings, Bilbo Baggins steal the Ring of Sauron, which he made to rule over all the other rings. Bilbo later on than passes the ring on to Frodo Baggins, his youngest nephew, to destroy. This leads to the story, The Fellowship of the Ring.
Bilbo gives his cousin Frodo the One Ring after being hard pressed to do so by Gandalf. In fact, Bilbo almost drew his sword on Gandalf.
Bilbo asks Gollum "What's in my pocket" (the Ring) and Gollum cannot answer.