Fear causes aggression in dogs.
We have to defend our country from the foreign aggression.
People who are prone to aggression can be dangerous.
Is aggression natural, or is it learned?
The dog showed no aggression towards cats.
angry or threatening behaviour or feelings that often result in fighting: Television violence can encourage aggression in children.
As North Korea displays aggression, South Korea concentrates its forces near the border.
The boxer needs to check his aggression.
The most visible forms of aggression are often seen between prey and predator.
Interspecies aggression is oriented towards goals related to reproduction.