Cut its fingers off until it talks.
I'm shocked that you would suggest something so cruel and inhuman.
Let's see what the religion of peace says about dealing with your enemies:
Sura (5:33) - "The punishment of those who wage war against Allah and His messenger and strive to make mischief in the land is only this, that they should be murdered or crucified or their hands and their feet should be cut off on opposite sides or they should be imprisoned; this shall be as a disgrace for them in this world, and in the hereafter they shall have a grievous chastisement"