Dear vs. Doe IDEA

Hello boys, what about to split deer into two type of animal

first - male - DEER.
it can attack back on you with its antlers.

Second - female - DOE.
it has no antlers so it cannot attack you back and this type of animal will be only running away from you)

i think this can add some more ralistics to the game (and it shouldn´t be hard to make it for you)