Answer:
no this word is no used to sentence
Because his curiosity gets the best of him and he wants to stay to see the cave man.
Misfortune in this sentence basically means bad luck, or bad timing. It is something bad that the man could not control.
That book was one of my favorites. It was scary and yet amazing.
A main theme is probably:
It is important to recognize what is evil as old major in the book clearly doesn't. The animals might have had a new leader, but they still had the problem of pride.