Ok, one thing did strike me upon seeing this. Both of the characters seem to have to the same exact faces, but with different skin/fur colorings, and hair styles.
You might want to work on making the eyes, eyebrows, nose, and even the mouths different when you're doing an eye-eye styled drawing. Otherwise, it looks a little strange. It's still very cute.
Other than that, it's great!
Ok, it needs 41 more words.....
Hmm.... The colors look great and vibrant.
The background seems to work with the two characters.
I guess that is about it. Look forward to more work from ya!