In Animal Farm, what happens to Boxer?

In ,has a
split hoof and it take a long time to heal. He does get somewhat better, but as the work
progresses in building the windmill, he collapses from overexertion. When this happens, some of
the animals tell . Squealer says that they will bring him to a human hospital to get him
cured. 

When the truck comes to take Boxer, Benjamin reads the sign on the
truck and he realizes that Boxer is going to a slaughter house to be made into glue. The other
animals scream. Here is what the text says:

€˜Alfred
Simmonds, Horse Slaughterer and Glue Boiler, Willingdon. Dealer in Hides and Bone-Meal. Kennels
Supplied. Do you not understand what that means? They are taking Boxer to the
knackers!'

A cry of horror burst from all the animals.

Later Squealer tries to tell the animals that the human hospital
bought the truck from the knacker but did not change the sign. It was all a lie, of
course. 

What we see here is theof Boxer, the hardest working animal, who is
killed when he can no longer produce.