Thread:Cyrannian/@comment-13044713-20130917020400/@comment-1633483-20130917144735

They can shapeshift naturally, though I haven't decided exactly how. Their claws and teeth are retractable in the Bisistar's natural form though the tail is often used instead as a stabbing implement.

When you make the Bisistar, I'd recommend that you use the creature I uploaded to the Sporepedia