My cat, Boo, was a wild cat when he began to start living under our porch. Winter was coming in Chicago and if he stayed there much longer he would of frozen. My family began to lure him towards our house with cat food and eventually we put the food in the house. With amplifiers projecting upstairs we were able to close the garage door and trap him inside. After chasing him around for a bit we were able to trap him and take him to the vet.
With no one to care for him he would almost certainly have gone to the shelter and been put down, but because he was young we were able to domesticate him and he became our pet. His name is Boo because of the great fear of humans when we got him.