anatomy lesson

Today we were leaving a local pool, walking through a building to the exit, when we saw a decorative dolphin hanging from the ceiling and Ella and I had this conversation:
"Is that a real, dead dolphin that's stuffed?"
"No, I think he's made of plastic."
"Mom, it's a she."
"Really? (I was extremely curious.) How can you tell?"
"You have to look REALLY close. But . . . she has eyelashes."