pentax & sigma question

Can anyone give me a definitive answer to this question?

Will lenses with the Pentax K mount fit Sigma cameras?

I've heard yes. I've heard no.

(There are no foolish questions, only questions asked by foolish people.)

NO, Sigma uses a different mount.

Thanks for the answer. You saved me some money.

Also I looked at some of your work. I like the flower shots, good use of color.
As for the photo of feeding a cracker to a big duck, you're a braver man than I am. I would be worried about losing a finger.