At first glance, many animals seem similar to each other regardless of gender. What I'm saying is we don't need to have them shove "THIS SPECIMEN IS FEMALE" in our face. Just have subtle differences between the genders if you're gonna implement gender distinction anyway.
and on distinction: we're all basing what's "feminine" or "masculine" based on our own human standards. just imagine if elephants could draw like us and they drew humans as more elephantlike and the sexy male ones have stupidly big tusks growing out of their faces.