Similarities of Carmilla and Dracula

Carmilla and Dracula are both vampire books with many similarities. The main characters in each book thrive off of young women to keep them young and alive. Young women seem to have the best blood for vampires to sustain life. Carmilla and Dracula have the same vampire characteristics. They both have to sleep in coffins and in order for them to die a wooden stake has to be driven through there heart. The two vampires also seem to have a mystery about them in the books, this keeps the other characters in the books guessing about them.