After Odysseus and his men have landed on the island where the Cyclopes live, they spend a night on the beach. He describes the next morning, saying that "young Dawn with her rose-red fingers shone once more," and this is an example of personification, the attribution of human qualities to something that is not human. Dawn is given the ability to be "young" as well as to have fingers.

After Polyphemus kills two of Odysseus's men, Odysseus uses a simile, a comparison of two unalike things where one thing is said to be like or as another. He says that the Cyclops "bolted [the bodies] down like a mountain-lion [...]." Odysseus compares the Cyclops to a mountain lion because of the vicious way he devours the men.

A simile is when a writer compares one thing to another by using the word "like" or "as."  You can see an example of a simile when Polyphemus the cyclopes first grabs two of Odysseus's men and kills and eats them.  The narrator says that the cyclopes

gripped up two of my men at once and dashed them down upon the ground as though they had been puppies

By comparing them to puppies, the narrator is showing how little they were compared to the cycolpes.  He then goes on to say that the cyclopes ate them as if he were a lion.  That's a simile too.  He is comparing the cyclopes to a lion to show how vicious and ravenous he is.