A man goes to a farm and sees a three legged pig.

He asks the farmer "how did that pig lose his leg?"
The farmer says: "last year a wolf came out of those woods and attacked me, the pig fought him off and saved my life."
"Did the wolf bite his leg off?"
"No! Last month the barn caught fire and I passed put from the fumes, that pig pulled me out and then ran all five miles to the fire station."
"And he burned his leg?"
"No! Last week I had a heart attack and that pig pressed on my chest with his trotters until I started breathing again and then dialed me an ambulance!"
"How did that lose him his leg?"
"No!" the farmer said, getting angry now, "look, that pig is the best, bravest, most intelligent pig that ever lived and a pig like that...."
"Yes?"
"A pig like that you don't want to eat all at once."