Auckland, New Zealand: Dog owner Lewis Nicholls writes that he has “had enough now of talking about how great [he] thought Cesar was because it upsets [him] that [he] did: “Here is what I have since learnt. Cesar Millan is a self-taught ‘dog behaviourist’. He has no academic background and he uses a lot of dangerous, aversive, outdated and abusive methods in the name of training. The methods he promotes cause a lot of fear, stress and anxiety in dogs. His methods can ‘work’ because the dog learns they have no other option especially in cases of aggression. The dog behaves appropriately to avoid any physical or confrontational corrections.” Nicholls now uses positive reinforcement training.