Throughout the history of mankind, dogs have always been some of the most useful things that they have ever used. Having dogs around has always benefited mankind. Dog’s make loyal companions to humans. They have also been used in jobs such as agricultural jobs, law enforcement jobs, and military. Although, there has always been controversy over whether they should be used in the military or law enforcement. The bottom line is that dog’s should continue to be used in the military, because no matter what mankind tries to do, it is impossible to replace the dog’s with anything else. One reason that dog’s should continue to be used in the military is because they are blessed with characteristic that humans do not have. When people look at dogs and humans, they will notice a number of differences between them. Some of those differences can be body shapes, dog’s are smaller and more agile, intelligence, dog’s may have stronger scents than humans, and some animals may also have better stamina than humans. Furthermore, dog’s would have the upper hand in traits over humans. That helps the dog’s complete missions that humans wouldn’t be able to do most of the time. Missions that would be done by dog’s easier than humans would be missions such as search and rescue, attacking enemy soldiers, and they can detect substances with their great sense of smell. Somebody can try to make a human do a dog 's job, but it won’t get very far. Dog’s are not replaceable in these lines of duty.