Chaining
Inhumane for dogs and dangerous for people.
Chained dogs, especially pit bulls, can be a sign of illegal dog-fighting.
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These chained dogs were part of a dog fighting ring in Rocky Mount, North Carolina. Injured and dead dogs were also found on-site, along with illegal drugs
Note that in most states dog-fighting is a felony. Illegal weapons, illegal drugs and illegal gambling are common at dogfights.