This is my first ever suggestion, so please tell me if I do anything wrong!

Curled Ears, a pretty simple mutation I wanted l since I started hearing about them. I'll show some pictures of what it looks like on my inspiration for this, (the American Curl, a domestic cat breed) and then get into the meat of this suggestion.

*Update my tablet sucks so you'll have to copy and paste the link below too your browser search engine (or look it up) to look at some, very sorry for any inconvenience*

https://vetstreet.brightspotcdn.com/dims4/default/2b736b6/2147483647/thumbnail/645x380/quality/90/?url=https%3A%2F%2Fvetstreet-brightspot.s3.amazonaws.com%2Fe5%2Ffc%2F21ba1acb4accb97fe8cb6d9f4a69%2FAmerican-Curl-AP-1LHCGX-645sm3614.jpg

https://vetstreet.brightspotcdn.com/dims4/default/5ec8932/2147483647/thumbnail/645x380/quality/90/?url=https%3A%2F%2Fvetstreet-brightspot.s3.amazonaws.com%2F43%2F17%2Fa10f741742b987c47d55df67bd48%2FAmerican-Curl-AP-1ODZHF-645sm3614.jpg

All right, time for ideas for how this mutie would work:
(1) it would be passable for both females and males to there offspring.
(2) it most definitely wouldn't be deadly, as the cats in real life have
no known medical issues linked to the ears!
(3) it won't effect hunting, patrolling, stats, breeding, or becoming a king at all.
(4) I'm pretty sure I already got this across, but it would be for all genders.
(5) it would be visible from birth (somewhat surprising, but true!).

Well that's about all I could come up with, if you have any suggestions, questions, or reasons why it shouldn't be added, please comment below! :3