So Kirby created Kamandi the Last Boy on Earth. A series with vivid imagery of a post apocalyptic earth ruled by sentient animals. I find that the covers of this series is some of the most evocative imagery I have ever seen in comics. The covers tell a story. Here are some of my favorites.
(Images come from The Cover Browser you can find more comic book covers there as well)
Issue 12 unfinished and finished Cover
(found at Bleedingcool.com)
Take some time and explore other great Kamandi Covers at the Cover Browser