The animal of the day is the Luna Moth. (Did you know These are very large moths with wingspans of up to almost 6″, but the 5″ Luna Moth appears even larger because of long tails on its hindwings. Oh, and like any butterfly/moth, the young form is a caterpillar.)
Also, Luna Lovegood is in Ravenclaw, as am I. Go Ravenclaw!