It started last week when Cookie simply stopped coming when I call her. Every morning we meet for a walk with about 15 to 20 dogs. No problems there (anymore).
She comes when I call her (while shaking a box with yummies) and she's just a very happy dog there. The problems start when it's all over and everyone goes home again. I'm the only one who has to go another direction, which goes through a field. I always let Cookie walk without leash there because that way she can go for a swim and get the mud of her body.

And that's the trouble: she's in the middle of the lake and won't come out. I walk away, she stays there. Okay, she comes when I walk away out of sight, but only so far till she sees me and than she either goes back to the water or fiddles around with sticks. No use getting her - she thinks it's a game.

This morning it took me almost 30 minutes to get her back on the leash.

How long does this adolescence last? I'm loosing my patience on it and have already decided that tomorrow is a leash-only day and a walk without the other dogs...