(Below: Matthew Shell of Oregon who neighbors believe is fighting his dogs. The chains used to attach the dog Hennesy to the treadmill,
which is not powered by electric, but by dog power, are there to keep the dog from flying off the front or the back. In only a few minutes, Hennesy was running 30 miles per hour.
Bloggers note: No person merely "exercising" (vs. training) their dog on a treadmill has a dog that runs 30 miles per hour. Neighbors have complained but law enforcement has done nothing.

Fighting dogs must be kept isolated from other dogs, so they spend most of their lives on short heavy chains, often just out of reach of other dogs. They are usually poorly socialized to any other dogs and to most people. However, many “professional” fighters invest much time and money in conditioning their animals. They are often given quality nutrition, basic veterinary care and exercised under controlled conditions where they will have limited contact with other dogs, such as on a treadmill or “jenny.”
These dogs are conditioned from a very early age to develop what dog-fighters refer to as “gameness.” The scope and method of training varies dramatically depending on the level and experience of the dog-fighter. The following implements and techniques are commonly used to train the dogs:
Treadmill: Dogs are run on the treadmills to increase cardiovascular fitness and endurance.
Catmill/Jenny: Apparatus that looks like a carnival horse walker with several beams jetting out from a central rotating pole. The dogs are chained to one beam and another small animal like a cat, small dog, or rabbit, is harnessed to or hung from another beam. The dogs run in circles, chasing the bait. Once the exercise sessions are over, the dogs are usually rewarded with the bait they had been pursuing.
Springpole/Jumppole: A large pole with a spring hanging down to which a rope, tire, or animal hide is affixed that the dogs jump to and dangle from for extended periods of time. This strengthens the jaw muscles and back legs. The same effect is achieved with a simpler spring loaded apparatus hanging from tree limbs. A variation of the springpole is a hanging cage, into which bait animals are placed. The dogs repeatedly lunge up toward the cage.
Flirtpole: A handheld pole with a lure attached. The dogs chase the lure along the ground.
Chains: Dogs have very heavy chains wrapped around their necks, generally in lieu of collars; they build neck and upper body strength by constantly bearing the immense weight of the chains.
Weights: Weights are often affixed to chains and dangled from the dogs’ necks. This builds neck and upper body strength. Generally, dogs are permanently chained this way. However, sometimes the trainers run them with their weights attached.
Bait: Animals are tied up while the dogs tear them apart or sometimes they are confined in an area to be chased and mauled by the dogs.
Drugs/Vitamins/Supplements: Dogs are given vitamins, supplements and drugs to condition them for or to incite them to fight. Commonly utilized vitamins, supplements, and drugs include: iron/liver extract; vitamin B-12; Provim; Magnum supplement; hormones (testosterone, Propionate, Repotest, Probolic Oil); weight-gain supplements; creatine monohydrate; speed; steroids (Winstrol V, Dinabol, Equipose); and cocaine.
The dogs are trained against one another and against older, more experienced dogs. In the early stages of training, the dogs are incited to lunge at each other without touching and engage in quick, controlled fights called “rolls” or “bumps.” Once the dogs appear match ready, they are pitted against stronger dogs to test their “gameness” or tenacity in the face of exhaustion and impending defeat. If the dogs pass the test, they are deemed ready to fight.
credit: www.animallaw.info
credit: www.katu.com