Nice visuals, not much humor
Using 3d for flash cartoons is a good start, but you might try simply using those as a guide, then draw over the shapes -- might give the characters a little more life and not so stiff and bulky. The voices were good, but didn't really fit the characters. There wasn't much humor - the same joke (about animals preferring to draw humans) works, but needs to be presented better - timing, lines, emotion... a good start!