Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst and a Very Dangerous Dog Lead

Doesn't work at all and endangered my dog. It does not retract, but just gets tangled. I couldn't use it to pull my dog in when a car came by and I had to grab the cord with my hands to pull him to safety.Cheaply made and very very dangerous.If I could give a negative star rating I would.