While this video is on musk turtles, Sternotherus odoratus, the same methods can be applied to some (but not all) other turtle species as well. The best example would be the Mud turtle, Kinosternon subrubrum. Big tail + concave plastron = male, small tail + flat plastron = female. I plan to post videos of other species soon too!
![](https://s2.save4k.ru/pic/GmdwryKFgIU/maxresdefault.jpg)