Please hold off editing for a second. I advise you to take a look at the category you're adding onto these pages, and notice that there are specific qualifications that need to be met for a page to be considered part o a category. This is a precaution for keeping categories organized and uncluttered, but adding the categories indiscriminately is damaging. Please take the moment to look over the pages that would meet the "Creatures" category and cease the random activity.
I'm sorry, I didn't know. It's just that I was trying put in those who are also creatures like the Merpeople, Nymphs, Fairies, Dragons, and Centaurs and Centaurettes. And there were some animals who are born magical like Pegasus and the Cheshire Cat, and those who are half human like Philoctetes, King Triton, and his daughters.
I really am sorry for doing that. It won't happen again.