A major criticism of using food in training is that the dog may become over excited, worry at the food, or even bite the hand that feeds it. However, the use of food is indispensable for classical conditioning, temperament training and behavior modification. Also using food and toy lures and rewards just makes teaching basic manners easier, quicker and just so much more fun for owners. Even so, food is used only initially to teach the dog what we want him to do. Once the dog learns the meaning of our handsignals and verbal instructions, food is no longer necessary as a lure. Also, we want to phase out food rewards and replace them with more meaningful Life Rewards (toys, games, and activities) as quickly as possible. See Food Critics