Aim of this paper was to review dog fighting which happens almost all over the world. Generally, two dogs, often of a pit bull breed, are put into an area to fight and sometimes kill each other. Dog fighting can involve high stakes, and carries with it the same sociological dangers of other gambling, particularly illegal gambling, and activities. They are generally unsocialized to any other dogs and to most people. However, many professional fighters invest much time and money in conditioning their animals. They are frequently given quality nutrition and basic veterinary care. On the contrary, the street fighters usually make little investment in conditioning or training their animals. Instead, they rely on cruel methods to encourage their dogs to fight, including starvation, physical abuse, isolation and the use of stimulants or other drugs that excite the dogs. Dog fights are organized in places of variety of locations and at any time. In rural areas, they may be impromptu events in a barn, outdoor pit, back alley, or carefully planned and staged enterprises in a location specially designed and maintained for the purpose. On the other hand in urban areas, fights may happen in garages, basements, warehouses, abandoned buildings, back alleys, neighbourhood playgrounds, or even in the streets.