Talk about a dog-day...

dog-ear \DAWG-eer\, verb:
1. To fold down the corner of a page in a book.
noun:
1. (In a book) a corner of a page folded over like a dog's ear, as by careless use, or to mark a place.
2. In architecture, another term for a crossette.

I do not like dog-eared books, but then I do not read too many! Those who read dog-eared books are bound to be having a dog day, in Africa, this is quite possible!