Caligene Dragons, or Halloween 2015 Dragons, were the species given out during of 2015. Unlike dragons of other holidays, Halloween dragons can be either male or female and do not have a scroll limit set for them. They are only capable of producing more Caligene eggs during a certain period when Halloween is celebrated in October. They can still be bred to all year round, producing their partner's breed of egg. Under the old Breed sort, these dragons sorted as "Halloween 2015 Dragon" on a user's scroll. As of August 14, 2016, they now sort using their Encyclopedia name.