Aesop's Fables: The Wolf and the crane

Aesop's Fables and classic Fables

A Wolf eating a bone, choked you the bone in the throat, and ran everywhere seeking help.
He found in their run to a crane and asked him to save him from that situation, and that immediately pay you for it. He accepted the crane and introduced its head at the mouth of the Wolf, taking throat flowed through bone. He then requested cancellation of agreed pay.
-Hey friend - told Wolf - don't think it's enough pay with removing your head safely from my mouth?

Never do favors to evil, traffickers or corrupt, because many pay you'd have if leave you safely.

Translated for educational purposes