He got a little hung up on the white dog. The second video is him finishing the book.
He can't go on to the next page unless he says the whole phrase without messing up. Sometimes he says yellow duck or goldfish (or any of the animals really) five or six times in a row, until he feels like he said it correctly. Funny kid.
And for your viewing pleasure is another video of Evan, from a few months ago. Please ignore the white trash outfit he's sporting. :)