I think so. If the monkey were your pet, for example, you'd probably not refer to it as "it".
Very poor thranslaton, also duolingo never reply comments, so they don't really care
hi, how come I cant say 'no, she is not a monkey' ? una implies feminine....thank you !!! :)
But I think it refers to the gender of the noun rather than the actual gender of the animal. I wonder if you distinguish between male and female animals if you know its gender.