The excerpt that does not illustrate a simile is "It is the hardest thing in the world to frighten a mongoose, because he is eaten up from nose to tail with curiosity." Unlike the other excerpts, this one does not use 'like' or 'as' for comparison. Thus, it stands out as a factual statement rather than a simile.
;
The excerpt that is not an example of a simile from "Rikki-Tikki-Tavi" is the one stating, 'It is the hardest thing in the world to frighten a mongoose, because he is eaten up from nose to tail with curiosity.' Unlike the other excerpts, it does not use 'like' or 'as' to compare two things. This identifies it clearly as a factual statement rather than a simile. ;