Is That My Cat?

"Is that my cat? It can't be. My cat is a slim, sleek pussy cat." Something strange is happening with this rather large kitty-the one who used to fit through the cat door, climbed trees fearlessly, and always wanted to play. Now she lazes on the windowsill, and it takes two hands to pick her up! Keep guessing as the story unfolds page by page, until right at the end when there's a big surprise!