Zoos are becoming facsimiles - or perhaps caricatures - of how animals once were in their natural habitat. If the right policies toward nature were pursued, we would need no zoos at all.
There's nothing masculine about being competitive. There's nothing masculine about trying to be the best at everything you do, nor is there anything wrong with it. I don't know why a female athlete has to defend her femininity just because she chooses to play sports.