Beast quest. No. 17 Tusk the Mighty Mammoth

Summary: "Tusk the Mighty Mammoth rules the rotting forests of Gorgonia with razor sharp tusks. She terrorizes the rebels at war with the evil wizard Malvel and is holding Ferno the Fire Dragon captive. Can Tom and Elenna defeat Tusk before Malvel<U+2019>s guards track them down? 'Then a vast shape came smashing out of the trees to their left. At first, all Tom saw were flying branches and whole trees uprooted and thrown through the air. Then, lunging through the chaos, came the most immense Beast Tom had ever seen. Tusk came thundering forward, her huge trunk lifted as she roared, her feet crushing everything in her path.'" --From the publisher.