Who Froze Up Mrs. Penguin?

Sherlock Yack – Zoo Detective – Season 1

Mrs. Penguin was thrown out of the art contest when she thought she'd get first prize. Humiliated, she fought with Marabout, Bird of Paradise and Warthog. So when she's found frozen in her enclosure, the three suspects are quickly found. In the meantime, Sherlock has decided to do a portrait of Hermione. Will he succeed?