Excuse me, but there are three genders: masculine, feminine, and neuter. Gender is a grammatical category; it pertains to nouns and pronouns, not living things. If you want to categorize living things, the word you want it "sex". It does no good and much harm if we allow our enemies, corruptors of reason and truth, to dictate the terms of discourse. Use "gender" correctly or else not at all. Please.