I want to buy cat treats for my one very picky cat. I have 3 cats, 2 of them love Temptation cat treats, but the third one will not eat them at all! I have tried many different flavors of it, and he will come running when i shake the bag as if he wants one, but when i put the treat down, he smells it, looks at me and walks away. Then my other cats eat his treats. Why do you think he does this, and what kind of treat could i try for him so he will possibly eat it?