Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for running!

I bought this harness for my 75 pound psycho-dog after a prong collar and gentle leader failed to stop the pulling. It seems to work okay if she's not too hyper and if we're just walking, but don't use it for running with your dog unless your dog will run beside you! (And in that case, why use a harness at all?) My dog goes nuts when we run and she pulls me so hard I was hoping this harness would make it so she couldn't pull me and we could just go for a nice easy run. Instead she pulled as hard as she usually would and this harness rubbed holes in her legs! She was screaming and barking (moreso than she usually does from the excitement of running) and I thought it was just from frustration of not being able to pull me but when we came inside I noticed the front of her legs were rubbed raw! I won't be using this harness for running anymore. Unfortunately I don't know what else to try. Also it's really hard to fit this thing to your dog properly. Good luck!