Behavior problems in dogs, if not resolved, can lead to aggressive behavior. Here are a few of the major ones.
- Fear, anxiety, and insecurity
All animals have three natural responses to danger: fight, flight, or avoidance. They will either attack, run away, or try to hide from that danger. Fearful, anxious, or insecure dogs will not naturally fight. They will run or hide. However, if either of these things does not remove them from danger, then they can lash out aggressively.
A dog in a constant state of anxiety can eventually stop trying to run or hide first because its internal energy is very high and very scattered, so they can progress to reacting aggressively to everything.