Dog (Books)

Dogs are mentioned fairly often in the How to Train Your Dragon Book series.

Description
Dogs (Canis lupus familiaris or Canis familiaris) belong in the Family Canidae and are closely related to Wolves and Coyotes. They have been domesticated by humans for many millennia, and have evolved with human intervention into a huge range of physical and behavior characteristics, forming a large number of different breeds. Some dog breeds mentioned in the Book series include: the West Highland White Terrier or "Westie" and Rottweilers.

Function
Dogs perform many functions for humans, ranging as a source of meat to hunting for humans. They can also be pack animals, transportation, pets, therapy dogs, and many other roles for humans.