[The bull frog in Italy [Rana catesbeiana]]

agentes nocivos allevamento delle rane behaviour comportamento comportamiento comportement cria de ranas especies facteur nuisible fattori nocivi frog culture frogs grenouille injurious factors italia italie italy larvae larvas larve metamorfosi metamorfosis metamorphose metamorphosis rana rane servicios veterinarios servizi veterinari specie species veterinary services