Young German Shepherd Displaying Aggressive Behaviors

The age of a dog at which a client seeks help for aggressive behavior can have a significant impact on the potential for success in a case.
Here is a five-month-old GSD which could have easily fallen into the "vicious cycle of seclusion" because of her behavior, which of course doesn't address the issue at hand, and tends to exacerbate the problem.
If left unchecked, you can imagine how this behavior would "blossom" as the dog approached maturity.
Thankfully, this beautiful GSD has a plan in place to move her in the right direction!

[@quorthunsargeras7054]

What aggression? I just see leash reactivity?

[@Nicole-kk6bx]

Is that a puppy? She's tiny.