Jindo puppies start fighting each other at around 4 weeks old. This part of growing up has very little to do with them becoming at all aggressive. While male dogs can be aggressive toward other dogs, Jindo dogs are not aggressive toward people.

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Jindo dogs have evolved naturally with the Korean land, culture and people. Jindo dogs are as much a part of Korean culture as kimchee and rice.

A legend passed down generations tell the story of a scholar who went into the mountains of Jindo Island with a red Korean dog bitch. While the scholar pursued his enlightened path of harmony with the universe, his dog kept him company protecting him.

A Korean wolf-similar to the Asian wolf-did not pass up a domestic cousin in heat. The red bitch delivered three puppies with different colors: white, black and red. From these three puppies, Jindo dogs were started.

This is one of several stories behind the origin of the Jindo dog. The Jindo dog's size is very close to that of the Asian wolf. This is quite interesting since the other Korean dogs are much bigger.

The most popular dog in Korea is the edible Korean dog called "Noo-rung-yee, "which means yellow dog. Compared to the Jindo dogs, Noo-rung-yee dogs have larger frame and meatier bodies and their ears are usually down. They are primarily raised for meat (About quarter of the Korean population consumes canine meat). Noo-rung-yee dogs are considered general purpose dogs and are used to guard homes, for hunting and as loyal pets that clean up everything kids drop on the ground.

Even though several foreign breed of dogs have been introduced into South Korea, mostly since the 1980's, Noo-rung-yee dogs have kept the same look. This probably has something to do with dog-eaters not liking the taste of foreign dogs.

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