Dog is the common use term that refers to “Canis Lupus Familiaris”. It is a domesticated form of the wolf. A member of the Canidae family of the order Carnivora. The domestic dog was originally classified as “Canis Familiaris” and “Canis Familiaris Domesticus” By Carolus Linnaeus in the year 1758. In 1993 it was reclassified by Smithsonian Institution and by the American Society of Mammalogist as ” Canis Lupus Familiaris, a subspecies of the grey wolf “Canis Lupus”.
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The term dog is sometimes used to refer some belonging to the family Canidae. It includes foxes, jackals, bush dog, the cape dog Lycaon,cayotes and more.
The English “word dog” comes from the word “dogge” of the middle English which was also came from the old English “docga”, a ” powerful dog breed”.
The term dog is used for the both feral and pet varieties. The word “dog” may also mean the male of the “canine species” opposing to the word “bitch” for the female ” canine species “.
Evidences shows from their behavior,their vocalization, their morphology and their molecular biology, led to the contemporary scientific understanding that the common ancestor of all breeds of the domesticated dogs is the grey wolf, although the time frame and the mechanism by which dogs diverged is still controversial.
In history, dogs are very important and useful to humans. They are valuable to human settlements. Some historians believe that human immigration across the Bearing Strait became possible through the use of the sled dogs. Dogs also performs many roles to people.They help humans in different activities. Some dogs are used in hunting or herding. They are also used for protection purposes. Dogs are territorial animals making them good guards to the house and to some other properties. Dogs are also used to assist the police or the military in different purposes such as detecting illegal drugs, explosives and other materials. They are also a good pets or companions. Dogs can also be used in guiding handicapped of differently abled individuals.
The dogs are very much versatile. They can perform different works compared to more than almost any other animals. They help humans in different activities. Because of this versatility, they have given the nickname as ” man’s best friend “.
In the current estimate, the dogs population had reached about 400 million all over the globe. There’s a lot of household who used to have dogs as pets. They usually have these pets for guarding houses and for any other purposes.