I just don't understand what is going on with Ivy. She's barely 6 months and already displaying what looks to be some type of aggression. Since her first day, I've been socializing her heavily. She's been to dog parks, schools, downtown, pet supply stores, etc. She does absolutely fine at the dog park. She sniffs butts, she lets them sniff hers, everything is fine.
However, when we go for walks, she tugs and lunges and snaps at my neighbor's dogs. In another incident, she was at a dog park and I let her drag the lead. Another dog ran up to me for treats. Ivy saw and 'attacked' the other dog. Today, we gave a friend and her dog a ride. Ivy was also in the car and decided to growl/snap at the other dog. Later on, we were playing around with the weaves and the other dog was standing a few feet from the weaves. Ivy weaved as she was supposed to and then lunged and 'attacked' the other dog. Neither dog was on lead. The dogs she snaps at have never displayed any type of threatening behavior.
This doesn't make sense to me. I've been around truly aggressive dogs to know that Ivy is not dog-dog aggressive. However, this doesn't sound like leash aggression either since half of her incidents were either on a very slack/dragging lead or she wasn't on one at all. I've e-mailed several behaviorists, but I was hoping some of you would have an idea of what this is and what to do. Thanks for any help!