The spotted hyena...
Hyenas are 'massive bone-crucnching beasts'.
The female hyena secretes more testosterone than the male hyena. She therefore produces bigger muscles and more aggression. Her masculinised private parts make it 'supremely difficult' to tell the sex of a hyena.
The female hyena is socially dominant to the male hyena.
The wild sex - reversal system of the hyena makes these animals a fascination in study... and to myself. Go the female hyena!
She is now my favourite animal!
- Saplosky (2004) Testosterone Rules.
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