Mr I is 8 mths so he's not teasing the cat, he's just chasing the thing he can see. I try to re-direct him, but sometimes he stalks the cat without me noticing. Tabby will not move and will not stay put if you gently move him, he'll just go back to where he was in the middle of the floor - the cat creed of I'm the most important thing & I deserve to be where I want to be. He will move with less than gentle persuasion, but I don't think its a good example to be hitting him.