Dreamworks Animated Movies Seeing Several Sequels

We all know that Hollywood is a business - nay, a machine, and that sequels are a regular thing. The pursuit of art is often pushed aside for the pursuit of dollar signs. Still, the latest sequel plans for Dreamworks Animation would make even the most money-hungry Hollywood producer blush.
Let's start small. Madagascar came out in 2005 and saw a follow-up in 2008's Madagascar: Escape 2 Africa. Madagascar 3 is scheduled for release on May 18, 2012, and it will leave the story open for a fourth film to come and tie everything up. What happened to good ole trilogies?

Next up we have Kung Fu Panda, which I thought was surprisingly decent. We already know that a sequel is on the way, scheduled for release on May 27, 2011. But that won't be the end of the series, not by a long shot, as current plans call for four more films, giving us six films in total.

Finally we have How to Train Your Dragon, which was a fantastic little gem and well-deserving of a sequel. It's getting one, too, with a tentative date set somewhere in 2013. How to Train Your Dragon is the most vaguely planned out so far, and the idea is being thrown around that there could be as many as eight chapters. This matches the number of books in Cressida Cowell's series, of which How to Train Your Dragon is the first. Doing as many films as there are books would make sense, had the first film not deviated so much from the source material, somewhat becoming its own thing.

Wow, just wow. I understand the need to plan ahead, and I love CGI films, but I don't these cows will survive all this milkin