Dogs are pack animals. When they feel threatened, they will defend themselves. They will also protect other members of the pack, to a certain extent. How they defend themselves, and how close they feel to the rest of the pack (their owners) depends on the dog race, and on the how they were raised. Since dogs judge dangerous situations differently, they should not be left unattended near a place where people are arguing. They may also judge unattended moves of a child as an attack. Therefore dogs should not be left alone near children.
When the Rottweilers' owners are not advanced, problems arise. Sometimes humans, mostly children are attacked by dogs. These attacks are a result of unresponsible owners. Rottweilers are very intelligent and need equally smart handlers to raise them.
In some areas, breeding certain dogs has been restricted or forbidden.