My brother did the shake-can (I think he used a Coke can with pennies in it) thing for his very strong-willed Shiba Inu. I've never tried it with Willie, but most of his problematic behaviors (like freaking out in the crate when we're gone), it won't really work for anyway. Maybe for his propensity for trying to steal people's food...but it's hard to imagine anything deterring him from food. He's not a really big humper, but on the rare occasions when he has, it's when he's just overstimulated from aggressive play.
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