When our daughter was young enough to eat from a highchair, she went through a food-throwing/food-dropping stage. You know what I mean. But I was clever. I figured out what vegetables our dog liked. When she threw food on the floor, the dog cleaned up.
A few years later our son reached the same stage. I could not remember which vegetables our dog had been willing to eat, so I experimented, with absolutely no success. I eventually came to the conclusion that our dog no longer liked vegetables.