That's some pig

A salesman for Case New Holland is making the rounds one day when he drops in on a farm he’s never been to before. As he pulls into the farmyard, a large pig in the pen by the barn catches his eye. He wanders over for a closer look and to his astonishment he sees that the pig has a wooden leg! As he is staring at the pig, the farmer emerges from the barn and extends a greeting.
The young salesman introduces himself, but then curiosity gets a hold of him and he asks the farmer about the pig with the wooden leg. The farmer replies, “Well young man, that is no ordinary pig. That’s a special pig.”
“I can see that,” said the young salesman, “but why does he have a wooden leg? “
“Well let me tell you.” Said the farmer. “One day I was plowing right there on the other side of that pig’s pen when I stopped the tractor to move a big rock out of the way. Don’t you know that tractor slipped into gear and would have run me over ‘cept that pig broke through the fence and pushed me out of the way just in time.”
“So is that how the pig lost his leg?”
“No, no, no,” said the farmer, “I’m trying to tell you that is one special pig. Why just a couple of months ago the wife and I were sound asleep about three in the morning when a fire broke out on the porch over there. That pig broke through the pen, rushed to the house and made such a ruckus we were woken up in time to put out the fire. He saved our lives!”
“So did he lose his leg in the fire?” Asked the young man.
“No, no, no,” said the farmer. “I’m trying to tell you. That’s one special pig! Why just four weeks ago I was home alone. I had a heart attack. That pig ran into the road and right in front of the first car that came by. When the driver got out the pig led the man to me lying in the barnyard. The driver called an ambulance. That pig saved my life!”
Alight, alright, I get it. That’s one special pig, but why does he have a wooden leg?”
“Mister, “ the farmer said, “a pig like that you don’t eat all at once.”