In ten years of short-story writing—mostly flash fiction of 1000 words or fewer—there are definitely favourite themes I return to.
Animals.
I have a penchant for writing from an animal's point of view. Whether it has something to do with having my desk right next to my guinea pigs, I don't know. Some authors have cats sleeping on their keyboards, but they don't write about them. Or they do, but only occasionally.
I appear to write at least four animal-based stories a year.
Between these pages you'll find dragons and other fantasy animals, cats, rats, insects, guinea pigs, birds, cows, foxes, bears, raccoons, sea creatures, viruses, and supernatural beasts. I don't think I have any fish. Maybe I should do something about that sometime.
Some are straightforward nature stories, but most are fantasy, speculative fiction, weird, or a mixture of genres, known as a mash-up.