Hit a Dog
Putting your hand(s) on a dog as a form of punishment is wrong. It will harm your relationship with your dog and prevent proper training.
In her book, It’s Me or the Dog, Victoria Stilwell, famed positive reinforcement trainer and star of her own dog behavior show on Animal Planet, writes, “When you hit a dog, you teach him to fear you, break his trust, and you weaken his confidence. Insecure dogs are the ones who are more likely to lash out in an aggressive display.”