An experiment with inkscape's bitmap trace, on a photo I took today of a family cat. She has very distinctive eyes so I thought I would play around with them, for this image.
This is a completely free image Red Cat's Eye that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.