This document provides an overview of protection sports and their history. It discusses various protection sports including Schutzhund, KNPV, French Ring, and PSA. These sports originated to evaluate breeding suitability and test a dog's temperament, trainability, and courage. The document also discusses the genesis of aggression in dogs and different types of aggression. It provides details on the training and exercises involved in PSA levels 1-3, which aim to test obedience, protection, and nerve in surprise scenarios.