The first two Subspecies movies were released on DVD (unfortunately their both out of print and were both region 2)
You can see the covers for all the subspecies dvd's that were out at one time (there is one on there that was cancelled)
http://www.angelfire.com/darkside/vl...cies.html#dvds
A campaign was also started to try to help get the first 3 a region 1 release... there's a link to it in my signature. Right now their just mainly trying to see how much of an interest there would be for the dvds.