Modern commercial dog fights often differ from traditional as much as livestock guardian dogs differ from fighting dogs. There are different rules, and different breeds involved. Most Central Asians used for modern commercial fights come from fighting lines. The majority of breeders are aware of their dogs’ backgrounds, and will tell whether the dog comes from lines used for fighting. One can always expect a high level of aggression toward other dogs from CAOs with a dog fighting background. It is always important to distinguish whether a dog will display aggression only toward strange, unfriendly dogs entering their territory, while establishing and maintaining the usual social relationships with other animals on the premises; or will attack regardless of whether the other dog is a member of the same social group. Promiscuity in aggression toward strangers and friends is highly atypical for the breed.