Abstract: An animal slip collar made of flexible material such as chain links has a ring at one end through which the material is passed to form a loop. An intermediate section of the collar is made of material heavier than the end sections but dimensioned to pass through the ring. When the loop is passed around the animal's neck the extra weight of the intermediate material causes the loop to adjust itself so that the intermediate section is at its low point and the ring is opposite on the back of the animal's neck.