I'm so happy for Iris and Carl!!!! ShepherdLover, I was looking at all of my previous topics, and when I was reading my topic, "Different Kinds of Collars and Leashes", when I came across your post, it said, "It's amazing how Iris know which collar is for what!" And I was wondering, how does Iris know which collar is for what? Because if you know, I'd like to train Sadie that, because she has a lot of different collars!!! Thanks!