Kitten graduation depends on you mouse and bird score. My mum said choose a tree and make a scratch when you are successful. Mum was very pleased when she saw my scratches and I graduated from kitten to cat. Mrs. Human was not pleased when she saw the scratches I made when I moved in and took over. I tried to convince her it was the feline system of accounts, and a sign of achievement, but she did not understand. And so now I have a scratch in my fur now and again, just to keep in practice.