Charming story about a chill cat--I always imagine him as a California hippie--who slowly loses the buttons on his shirt until he's left with just his bellybutton! The pictures are graphic and easy for kids to see, and there is a lot to discuss: numbers, counting, colors, etc. There is a song that the cat repeatedly sings - not sure what the "official" tune is but it is fun to make up your own. I have one song, my husband sings it differently, my mom yet a third way, and so on. It's all good!