Understanding your dog
Pack drive...
...the desire to be with the master of family
Prey drive...
...instinctive desire to chase anything that moves. This includes more than just living animals, things such as toys, balls, frisbees, etc. it is also a dog trainer's best friend.
Active aggression...
...directly related to prey. seen in dogs with extreme prey drive. This is when a dog actively demands it's prey either when it can't get to the prey or when the prey is not moving. Barking will usually go into a high pitch or scream in order to panic the prey into moving so they can seize it.
Defensive aggression...
...reactive aggression due to a threat related to self preservation directly related to flight instinct.
Social aggression...
...the desire to establish pack dominance. This is a very dangerous true form of aggression in that it is not related to Flight instinct. This is a dog that will challenge most people that it comes in contact with, and this is not limited to the owner if pack dominance has not yet been established. A problem that should be rectified immediately.