What is Boxer's ultimate fate in Animal Farm?
Boxer's ultimate fate is like all of our ultimate fates, I guess. That is, he dies. You can find this in Chapter 9. What is different about his ultimate fate is what happens after he dies. What happens is that Napoleon has apparently sold him to the knackers. They are allowed to come and take him away. The animals are told that Boxer is being brought to an animal hospital, but he is really being brought away for slaughter.
This shows how much like the people the pigs have become. In Old Major's speech he had denounced the people for doing this exact thing and now the pigs are doing it.