Here's an extremely entertaining CG animated monster short film called Mutant Land from director Phil Tippett. The CG animation is done really well, and I love the visual style and creature designs. There's really not much of a story, but it introduces us to a crazy post-apocalyptic mutant world in which creatures must fight for their survival.

Here's a short synopsis for the movie:

As the sun goes down in the dark and terrifying place that is Mutant Land, the creatures roaming this world are on the ultimate search for food.