I rather like the lighthearted vibe of this piece; it kinda just makes you want to sit back and smile. The softer part at about two minutes in was of particular enjoyment; it had an almost delicate sound that I could very easily imagine pertaining to a little bunny rabbit. The transition back into the main melody seemed a tad sudden, but slow builds aren't always necessary, and probably not with an energetic piece like this one.
Overall, I dig it. Good work!