Of Mice and Men What sneaky thing does Lennie try to do?no
In the novel "Of Mice and Men" by John Steinbeck, the author tries to pick out small events which will shed light on Lennie's personality and character - and his learning challenges. Lennie is often slow to respond and to pick up and process new information. However, he knows enough to work out cause and effect and actions and consequences. George is worried about Lennie's obsession with petting things that don't belong to him - and which might get hurt. So Lennie knows George will be angry and has learned how to try to hide actions like keeping a mouse or killing a puppy. It doesn't always work, so he goes on to commit the crime he can't hide. George knows that too, and it influences his decision at the end.
I agree with the first answer. I think that you are talking about when Lennie accidentally killed the little puppy that he had gotten. He takes the puppy and tries to hide it in the hay. This happens in Chapter 5.
Lennie is afraid because he knows George will be mad at him. This is a problem for Lennie because he relies on George so much. He is worried, in particular, that George will not let him be part of their dream anymore. He is worried that George will not let him take care of the rabbits.
He kept a dead mouse in his pocket as well. He used it just so he could pet it because he liked soft things, but he knew George didn't like him having it and that's why he kept it hidden.
He also tries to go get the dead mouse in chapter 1 that George threw far away. He was supposed to be gathering sticks but went to get the mouse.