Drug dogs are classified into three categories – those that are aggressive, those that are compulsive, and those that are very laid back. These dogs go through very extensive training before performing their tasks. Training takes anywhere from three to twelve weeks. Dogs come out of this training with different types of personalities. The first of this category would be the aggressive dog. This dog is the one that tends to be forceful and damaging. The aggressive dog will tear things apart when searching for drugs. This dog takes his or her job serious. You can compare these animals to human beings when it comes to work. Some human beings take their work serious