Answer:
Given the story line Of Mice and Men by John Steinbeck, it would appear the author does support the idea of euthanasia.
Step-by-step explanation:
There are at least two cases of euthanasia in the novel of Of Mice and Men. The first is with Candy's dog who was sick and old and was shot but the character of his owner expresses some regret. He said he should have shot the dog himself and not allowed a stranger to kill him because he was old and in pain. The second example is when George kills Lennie at the end of the novel. This again is built up in the story as a mercy killing out of love because Lennie was being chased by a mob.