Occasionally there will be a hereditary or medical issue like a form of seizure disorder
called Rage Syndrome (and must be diagnosed as Rage and not a dog who is poorly trained and socialized) or other chemical imbalance that may cause a dog to be an inherited risk.
The form of aggression commonly
called «
rage syndrome» can be seen in any breed, but has been documented most frequently in English springer spaniels and English cocker spaniels.