The Internationale kennelclub Fédération Cynologique Internationale (FCI) divide the dog breeds in ten groups.
The Shikoku is group number 5, which is called Spitz and primitive types, section 5 Asian Spitz and related breeds. Without working trial.
There is also an other name for the dog breed Shikoku namely Japanese Wolfhound, Kochiken or Mikawa Inu which is originally from the island Shikoku. This dog breed is hardly known outside his country but begins to be very popular.
The shikoku has a strong hunter instinct and is specialized in hunting dear, boars and bears.
Also can the Shikoku behave distantly and reserved towards strangers.
When you raise this dog you need to be consistent and let the dog socialize very well.
For more information click the green button about the dog breed standards from Fédération Cynologique Internationale (FCI)