The State of the Web, Summer 2011
Note: The downloadable .zip file contains individual PNGs which can be opened by any image editor, as well as the original Adobe Fireworks PNG file, which is named tumbeasts_fireworks.png.
Also, a big thanks to Sam Spratt for this amazing Tumbeast illustration:
You can see more of his work here.
Also, there's a bunch of funny Tumbeast stuff on Memebase as well.
Tumbeasts by Matthew Inman are licensed under a Creative Commons Attribution 3.0 Unported License.
Based on a work at theoatmeal.com.