Lennie accidentally killed his pet. These foreshadowing moments establish Lennie's innocence and make his tragedy seem inevitable. Lennie's passion for stroking soft objects and his tendency to kill them are established when he kills Curley's wife. The reader doesn't think Lennie could premeditatedly kill.
Explanation:
This is just my own opinion. Of course, you are free to alter it to your own.
Huck reacts by not being able to speak or breathe because he is so scared. I think he is starting to realize that life isn't forever and life can be quickly ended by other people, so you have to be careful with what kind of situations you put yourself in and who you surround yourself with.
According to how the narrative is made, specifically how he tells us what he's done and his situation, it can be intuited that he was struggling in that time and needed to eat, so he had to steal some food but he was planning to return it as soon as possible.