4. Bindi Irwin, 17

koala, mammal, vertebrate, nose, marsupial,

Do you remember everyone’s favorite Crocodile Hunter, Steve Irwin? Well, at age 17, his daughter is following in his famous footsteps. While Bindi isn’t hunting any crocodiles, she is advocating for conservation efforts and last year she shined on Australia’s Dancing With the Stars.

Olivia Hallisley, 18
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