Chloe is 2 1/2 years old and she has leash aggression. When we walk by another dog, doesn't matter what size the dog is, she tends to bark and lunge at the dog. If she is off leash she doesn't do it at all. I make her sit down when I see someone coming towards us (when she is on leash) and try to keep her calm as they pass, but this doesn't always help. Anyone else have this issue? Any suggestions on how to change this? I'd love to be able to walk past people with dogs and have no issues. She looks like she is a mean dog when she does this but in fact she is a big sweetheart.