Sublime
An inspiration engine for ideas
anger was a genetic precommitment to be violent if sufficiently upset by an agent. Ideally this precommitment would serve to dissuade those who might think of hurting the human.
Max Harms • Crystal Society (Crystal Trilogy Book 1)

On an emotional level, aggressive behavior is very stressful for a dog, especially if the behavior is triggered by a traumatic incident, abusive handling, or an inability to cope with continually changing environments.
Victoria Stilwell • Train Your Dog Positively: Understand Your Dog and Solve Common Behavior Problems Including Separation Anxiety, Excessive Barking, Aggression, Housetraining, Leash Pulling, and More!
if you have a dog who is bred to run around in big circles to find prey, or to rummage in the bushes to flush birds, or to pull a sledge etc. they will automatically default to this genetically anchored behaviour in times of stress and high arousal.If
Simone Mueller, Charlotte Garner, Päivi Kokko, Clara Hilsberg, • Walking Together
In the physical realm, their aggression is almost always expressed in passive-aggressive acts, such as provoking aggression from others and then using their aggression as an excuse to withdraw from the connection.