DS! chucks food on floor when bored, finished or if dogs get in!!!
Our situation exactly!! The only thing I do is try to make sure the dogs aren't in the room, because he prefers to feed them rather than to eat. I let the dogs in afterwards to clean up all the stuff he's thrown on the floor

I don't worry about it and hope it's a phase that will pass. We have floorboards and I just mop the floor afterwards. I guess at his age, I figure he's not doing it to annoy me, he's just experimenting with gravity, feeding the dogs and as a sign that he's had enough. When everything I offer goes on the floor, I end the meal. Having said that, it can be really frustrating when a meal you've spent ages on just gets chucked on the floor.

xx