Don't be fooled by the appearance of these roly-poly animals—hippos are one of the most aggressive creatures in the world. Hippo Moms, like their animal counterparts, have no issues running the show or bringing down the competition if need be. Frequently found chairing bake sale committees and school fundraisers, Hippo Moms are the ones to watch out for lest you be assigned to the ‘Pizza Serving Kitchen', at the school Welcome Back Barbeque. Hippo Moms are versatile, agile and not to be underestimated. She runs a tight ship and her kids are usually well behaved and good students.