No, this is a custom modification. It is not what they look like now.
The Hippos WERE changed a few years ago, that much is true. But their character models do not appear to be emaciated - instead, their canonical names have been altered and their color shades lightened. I checked out BoardGameGeeks, hoping to find out more about these changes and possibly even uncover some drama, but apparently Hungry Hungry Hippos is frowned upon in that community.