I'm writing a children's story where all of the characters are anthropomorphic animals. The problem is that I don't know where to actually reveal this fact. I don't want to open the story effectively shouting, "Just so you know, this story has no people, just animals, the main character is a duck." I currently have it written so that it's revealed shortly after the start, with prior hints being in the description, as it seems to be the most natural way of doing it. I worry that the reader will miss these hints and respond badly to the reveal, as it's not meant to be a surprise, just a matter of fact observation that our hero is a duck. Other animal characters usually have their species in their name, or are shown in illustrations before the story, but I don't want to be so cliche, nor do I have the luxury of illustrations. Has anybody written a similar piece before, and do they have any tips on how to show the animals without it seeming forced?