PURPOSE: A dog collar capable of easily attaching and detaching is provided to enable users to easily fasten the dog collar to a resisting dog by having a know shape.CONSTITUTION: A dog collar capable of easily attaching and detaching includes a string and a knot. The knot is for adjusting the size of a loop formed by the dog color. The string is for preventing a dog from running away.COPYRIGHT KIPO 2012매듭 형식으로 목걸이를 조절할 수 있는 강아지 목줄이다.