Black Thing was immediately what I thought this was. Half-expected this to be a piece right out of the 'kill the person above you's avatar' pixelation thread 
Cute. Random, but cute. I'll take a page from onek's book and agree it could use to shadows to make it less flat looking.
nice scene, i rly like it, maybe its a bit flat though, i think some shadows on the bg would help....
the cat extremely reminds of this piece by helm
reminded me of Mort from Madagascar 2.. haha anyway looving the originality... btw where the hell did the fish come from :P