Mitosis.
(
JollyJack - a stench from the past,
Tue 19 Jun 2007, 10:40,
archived)
That suggests
they split into two on their own. Do they require food for this? I think we need to know!
(
Watney Heckbulb uhnnnnnnnn has a new blog: www.skepticcanary.com,
Tue 19 Jun 2007, 11:09,
archived)