I have Ace, 16 months old, good dog and I worked with a trainer before.
My problem is the next: When we are at the dog park and he sees other dog's toys , I mean unique toys not just tennis balls , he takes them and wont let it go.
Part of the problem the owners start to chase him and I also have to do something because of the owners, so the nightmare starts. Ace thinks it's a nice game.
Recall doesn't work, treats don't work, when I say drop he drops it but the next second picks it up again. If nobody runs after him he just leaves it but it happens only rarely.
I'm afraid because he often gets those tiny balls and what if he chokes on those?
Any idea, please?
Thx.

ps: I bought the exact same toys for him, of course he doesn't want those
