Something really weird just happened in my pokemon black game, I was searching for pokemon in the grass and I came upon a tabunne and when I went to throw an ultra ball to capture it, it made a weird noise, then before the ultraball landed on the ground it was shaking in mid-air and then right when it landed on the ground it captured the tabuune right away without even shaking! Does anyone know what might of happened, was it a critical cature or what, please post. 
