OK, you just learned human legs:
. Well here's a new one:
ー animal legs.
Really sorry to do this to you. You're thinking, "Human legs, animal legs? Who give a shit??? "
But there is a reason -- if you don't make the distinction, you will never be able to distinguish between two of the most common kanji: look (見)and money( 貝).
HOW TO TELL THEM APART:
Human legs are curvy because humans dance. Animal legs are straight because shut up is why.