Oh that vet show? I was watching one where they were talking about mating and they were talking about these fish where the girls transform themselves to males if none are around so they can mate. Sounds like Jurassic Park but their are certain animals that do that I am glad they all don't. They also were talking about elephants and how dangerous it could be They weigh so much. Then I had to leave while they were talking about lions and how unsuccessful their matings can be I guess it takes multiple tries to get a pregnancy, but more fun for all involved