Hokkaido dog is a relatively rare breed in those six types, and it is estimated that there are only about 7,000 dogs currently in Japan. Their lifespan is about 13 to 15 years old. It is generally said that medium dogs have a lifespan of 10 to 14 years old, so Hokkaido dogs are the same as those. Also, the height is about 42 to 53 centimeters and the weight is about 15 to 30 kilograms. It is a little bigger than the other medium dogs. Some people may be mistaken for the Shiba dogs because they and Hokkaido dogs look similar in their figures a bit, but the size is a little different. It is one size larger than Shiba dogs, and the chest of the Hokkaido dog is deeper and the muscles are firm. 