Sometimes bookmarks are not sold as bookmarks!
I was in a shop recently and saw these gorgeous birthdays cards of animals, produced by "Courtier" in England. The cards are in two attached pieces and are designed to stand up when the feet are brought forward.
I straight away saw them as being useful and wonderful bookmarks and that is why I purchased them! The cat and dog (a long haired Dachshund) being my favourites! The feet come forward and sit nicely over the page of a book and serve very well as a bookmark! Here they are in their original state and also popping their heads out from within two rather appropriate books from my collection.. Miaow and woof, woof!