Answer :

Page 51. "Valleys have Ears" - Personification
Page 71. "Hearts of Mountains" - Personification
Page 71. "Out of his pale lamp like eyes"- Metaphor
Page 118- "great bare arms and legs with knotted muscles"- Metaphore
page 226- "my armor is like tenfold shields,my teeth are swords,my claws spears the shock of my tail a thunder bolt,my wings a hurricane,and my breath death"- Simile and Metaphore

- Page 48. PERSONIFICATION " Valleys have ears". Of course, valleys don't have ears but it is implied that what is said could be listened by elves.

- Page 68. METAPHORE " Pale lamp-like eyes". Is is comparing Gollum's eyes. They were not clear, they were so pale that they resembled the light from a lamp.

- Page 212. SIMILE "It was like water in the sun, like snow under the stars..." They were refering to a stone, a white gem, that it was really beautiful.

-  Chapter 9. HYPERBOLE "Eyes as big as saucers". It is considered an exageration.

The hobbit is full of figurative language. here, there is an example of each