I'm going insane? Tips, advice

Just 3 days ago my uncle moved in with me, my older brother, and parents. He will be staying here till October 3rd. My uncle has a 2 year old son, and he is a pain!
He is always throwing stuff around, grabbing his food and throwing it at me. He runs around really loud, and cries so much! He especially grabs my iPhone, iPad, shoes, etc. And throws them to the floor. This makes me so mad. His father, my uncle, sees all of this but does NOTHING about it. He also hits my dogs with his hard toys, and it obviously hurts them. When they are laying down sleeping, he will come and try to get on top of them. My dogs are very, VERY, calm and gentle with people, especially little kids. But they are all starting to bark at him, push him a bit, and growl. I have 6 dogs, so if they all got together they would completely tear this little kid apart.
It's only been 3 days and I'm going completely insane. I know he's only 2, but it makes me so mad that his father does nothing about it! I've ALWAYS lived with my parents and brother my whole life, so this is completely new to me. I have No patience for littl kids at all. They annoy me so much.
Any tips, advice, or help with this?!

You need to have a family talk and explain there needs to be some discipline in the home. The kids has no fear in him when it comes to supervision. I'm not saying beat your cousin, but ask your uncle to spank him once or twice when he's abusing the pets or others things.