House Hippos

So, I'm writing a series of stories (both fiction and non-fiction) on house hippos. Umm, I got this idea from an ad that the Canadian Government set up a few years back, they tried to warn kids that not everything on the internet is safe and can be relied on; basically they stated a few facts on "house hippos" and at the end they told kids that it was fake and that they should be careful on the internet/web. If you want the link to the ad, here it is: http://www.youtube.com/watch?v=NBfi8OEz0rA