This is an example of digital citizenship question that came up in a yearbook class.
This is an officially licensed image of Warner Bros. Studios. Using this image in your book without acquiring the proper permission would be copyright infringement.
This image, although not an exact copy of the Warner Bros. version, is still close enough to the original to cause confusion. Its use would probably be considered copyright infringement.
This image, which is dissimilar enough not to be mistaken for Bugs Bunny, would be safe to use in your yearbook without contacting Warner Bros. for permission.