When Kieran was around 9 months old, Uncle Rugrat gave him the book Can You? Play Like a Kitten, which he loved. It has different photos of cats, with a mirror at the top, and asks the child to mimic the cat by rubbing his eyes, yawning, etc. Now Kieran will flip through the book and ask me to mimic the kittens, while Charlotte wants us to read it to her. It's definitely been a good book to have around, since they enjoy the photos and think it's funny when we mimic the cats.