Describe how Candy is affected by the death of his dog in Of Mice and Men

Candy had a very difficult time when his dog was shot. First, he clearly did not want Carlson to shoot his dog.  Candy had his dog for a long time, and in some ways it was his only companion. This is a significant point, because in this world, friendships are rare. So, when he heard the gun shot in the distance, he was in pain. Here is the quote.

A shot sounded in the distance....

Candy had a very difficult time when his dog was shot. First, he clearly did not want Carlson to shoot his dog.  Candy had his dog for a long time, and in some ways it was his only companion. This is a significant point, because in this world, friendships are rare. So, when he heard the gun shot in the distance, he was in pain. Here is the quote.

A shot sounded in the distance. The men looked quickly at the old man. Every head turned toward him

For a moment he continued to stare at the ceiling. Then he rolled slowly over and faced the wall and lay silent.

Second, Candy also has regrets.  So, we can say guilt affects him.  He confides in George. He says that he should have shot the dog himself.  This shows that Candy also knows that his dog is old and in pain.  It might have been the merciful thing to do, namely to give the dog a good death.  However, he should have been the one to do it.  Here is what the text says:

"I ought to of shot that dog myself, George. I shouldn’t ought to of let no stranger shoot my dog."