We’re starting off with some small furry superheroes, and then I have a section on Star Wars costumes, which completely count because there are hundreds of Star Wars novels. Also, the dog in an AT-AT costume make me crack up every time. After that, I have a variety of Halloween pet costumes representing specific characters from books like Winnie-the-Pooh, Lord of the Rings, and even Sailor Moon. I couldn’t find any costumes from anything other than the biggest franchises of all time, so if you’re looking to add some diversity to your bookish Halloween pet costume, you’ll have to craft it yourself, unfortunately. (And then please send the picture to me.) Now for a few disclaimers: please supervise your animals while they wear costumes, especially rodents. (Yes! There are guinea pig costumes on this list!) I am not liable for your budgie chewing through a tiny Lord of the Rings cape or your Saint Bernard swallowing a jaunty Sherlock Holmes cap. Also, these prices are accurate at the time of writing, but may have changed since then. Enough preamble! Let’s get to the absolutely ridiculous photos of pets in bookish costumes! Sadly, those are all the bookish pet Halloween costume photos I have for you today. You might also like this list of books with pets on the cover, these bookish Halloween costume ideas, or these Halloween kids’ books.