Lance the lion
"Wow", a student cried as he was googling testosterone in one of my biology lessons, "did you know that if you remove the testicles from a male lion, it will lose it's mane"?
"Ouch, a faded lion", another responded.
"Yes, so it is. No testicles, no testosterone. No testosterone, no male characters.
A castrated lion has no or little mane.
On the other hand", I reflected, "Have you heard about Lance, the lion that has shown it possible to do big physical performances in spite of reduced "testicle power""?
Let's kick the inner lion started!