In the United States, pit bulls are the breed of choice for dog fights, due to their incredible strength and dog-aggressive tendencies. Although dog fighting is illegal in the U.S., it is still practiced, and is usually accompanied by gambling. People who train pit bulls usually prepare them for fighting by having them pull weighted sleds and run on specially designed treadmills. Often the codeword "game bred" is used to indicate that a pit bull has been bred especially to fight. Breeding aggressive pit bulls is sometimes associated with the hip hop culture, which considers it a status symbol to own the toughest dog.