Dog is a domestic animal whose usefulness is rearely appreciated by man. It not an ordinary animal. The dog remains faithful to man. The popular saying in a marriage ceremony "for better for worse" is more applicable to the relationship between the dog and man in all circumstances. It is unlike man who can dessert his friend when situation is unfavorable.
It is used man to hunt other animals. Hunters usually rely on the ability of the to track down other animals. It does not consider the fact that it is in same category with other animals. It often endanger it's life as it ferociously attacks these other animals. It then provides the meat which man eats with relish.
It is always used to fight against criminals. The police train the dog to become detective. With this training, it is able to sniff out where rubbers are. Such rubbers are then arrested by police.
During war, the dog is also used to the advantage of of the army. Highly trained dogs are used as spies. They are sent ahead of army to spy where enemies are hiding. Interesting enough dog report back to man.
At home, the dog is used as a guard. It is used to keep watch over man's house. It is usually outside at night. As soon as it notices any strange figure, it starts barking. If the strange figure dares come near the house, it will bring him or her down. Sometimes it is killed in the process of defending the home.
Many of us are not aware that the dog can be used as a means of transportation. This is however not done in everywhere in the world. The dog has proved quite useful in carrying load as it walks on ice. Many other animals cannot do this.
We can now see how dog is valuable to man.
source
