Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Collar Too Stiff

I bought this for a miniature dachshund, so her neck is about six or seven inches around. This collar worked for her barking, but the fit was terrible. The collar is made of a stiff rubber and is all one piece, so it cannot be put on a more flexible collar. When it is adjusted to her small size, the buckle and barking device make the collar an odd shape, so the barking device does not stay by her throat unless it is adjusted so tightly that the prongs on the device press too hard into her throat. It works for her barking, but I would buy a different style of collar for a dog with a very small neck.