Look at these little statues of vomiting animals I bought in a Tokyo subway vending machine

I saw a plain-looking white vending machine inside Obuko Station in Shinjuku. It was selling a variety of small works of art, including a series of white animals vomiting colorful streams of food. They were 200 yen each (about $2). How could I resist? I don't know who the artist is, or anything else about them other than the fact that they are awesome. I need one more to complete the set - a tiger. But they are "blind boxed" which means I don't know what I'm getting until I open the box.