If you want the cougar marking for the canines, all you have to do is go to your main FeralHeart folder, open the markings.cfg file, then you find the cougar marking that is under [FHead] (I believe it's : Cougar;fmarkcougarhead.png ??), copy it and paste it under [CHead]. Make sure you have it in this layout: nameofmarking;filename.png/jpg
if it doesn't work, try and troubleshoot and retrace your steps.