This is a board book version of the song. I kind of like board book versions of songs I don't mind singing over again; it's marginally more entertaining for everyone than me re-reading a book where I don't have a tune to go with it.
A. likes it, but the other day, for reasons that now escape me, I started singing the third line of each verse ("So they all rolled over and -stuffed creature X- rolled out") really, really, really fast. A. started laughing and, quite literally, didn't stop. I'd finish it, she'd hand it back to me to read again, and just kept laughing.
I have no idea why this was so funny to her. I mean, it is a little funny. But wow.