Unusual OOAK? Pottery Mugs

I recently stumbled upon these two highly unusual mugs. Both are very large, with no manufacturers mark, only a potter's mark. The first is blue glazed stoneware with an applied twisted handle. The lizard depicted on the front is unglazed. A really lovely piece.

The second mug depicts a shark with a tail that wraps around the mug.

Both mugs are truly a work of art. Just wish I knew who created them!