Yotsuba

Yotsuba fancies herself a detective à la Sherlock Holmes. She can often be found with either a digital camera or a magnifying glass in hand, trying to spy on her brother. In the magazine stories and mini-novels, Yotsuba owns an unnamed talking toucan In the first Sister Princess anime, Yotsuba does not have a pet, but owns a toy bird aptly named "Watson", who she keeps in a cage like a real bird.