The Magic School Bus - Butterfly and the Bog Beast - Ep. 16

The class needs a new mascot for their soccer team, the old one being so old that nobody even knows what it is anymore. Phoebe is convinced it should be the butterfly, but the rest of the class disagrees with this. Janet shows up again and convinces them that it should be the "Bog Beast". Since nobody seems to know what that is, Ms. Frizzle takes them on a trip to the swamp to find out.