Both look sort of female from what I can see. What color are the eyes? Maybe that would be a clue. If they are red, then it should most likely be a male, but if brown, it could be either sex, even though males most often have red eyes.Age unknown, I brought both back as adults from Texas 5 years ago, so they were already messed up...
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I think they are two different turtles as you surmised.Are these two different animals? One looks like it has eggs.
Faces and parallel view of the plastrons...just saying...