how old is Tarzan at the end of Tarzan 1?

To tell the honest truth, he should be in his late twenties... but I'm not so sure about that...

he's gotta be around 14 ...WHY? the lepord is still alive AND where TF is his facial hair? being tall and muscular have nothing to do with it.. he works out constantly and eats a diet of fruit. His bio dad had a mustache...where is Tarzans??? does he shave on a regular? nope cause throughout the movie not once does he stop and say " me tarzan need shave" He's a skater boy discovering himself...and sexuality.. u know how disney does things... lets not be brand new.