What is a unispidermouse?
A unispidermouse is a unique organism that was created by breeding a spider with a mouse, then adding some narwhal genes to give it its special horn. This animal has adapted to survive in the shadows behind books in libraries or anywhere a bookshelf is located. Due to its eerie appearence, it is mostly thought of as an illusion when seen. The unispidermouse usually survives by eating the paper on the edges of books, which means it doesn't have to venture far to get food.
The habitat shown in this picture has been slightly illuminated so you can see it.
This is the unispidermouse in its natural habitat. It blends in to the shadows and hides behind the books.
This picture depicts the unispidermouse in its habitat again, but it is lit up so you can see it.