No, but you can dress like one.
once you have finished the missions you go to the shop click on the fishing rod and then go to the beach or river and press a but make sure to equip it first
you have to press A in your home when your near a lamp
you can't turn animals into owls on acww
It is impossible to turn into an animal on animal crossing for gamecube. It would defeat the whole purpose of the game.