Un, yuri thinks otherwise, most espada and arrancar form into animals and some into their previous hollow forms. Yuri is basically trying to say that their are espada and arrancar who do not have animal innate ressueccion. Example Yammi is um yuri dun know who he is. Ulquiorra is um demon, and nel is a mythological beast. Though most are animal some are not...Yuri thought yuri might help you with this.