Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! Geronimo Stiltonoot and his family save a young dinosaur from the river! The dinosaur and Benjamin quickly become good friends. But the dino turns out to have a tremendous talent . . . for mischief! Can Geronimo get him back to his herd before he causes a megalithic disaster?

Geronimo Stiltonoot and his family save a young dinosaur from the river. The dinosaur and Benjamin quickly become good friends, but the dino turns out to have a tremendous talent for mischief. Can Geronimo get him back to his herd before he causes a megalithic disaster?

Squeak is a scaredy-mouse, but his sister convinces him to go to the kitchen with her to get some chocolate cake. What if he gets lost, though, or comes face-to-face with the big orange cat? With a piece of string tied to his waist so that he will be able to find his way home, Squeak sets out into the dark, shadowy hall....

Geronimo Stiltonoot and his family save a young dinosaur from the river. The dinosaur and Benjamin quickly become good friends, but the dino turns out to have a tremendous talent for mischief. Can Geronimo get him back to his herd before he causes a megalithic disaster?

Geronimo Stiltonoot and his family save a young dinosaur from the river. The dinosaur and Benjamin quickly become good friends, but the dino turns out to have a tremendous talent for mischief. Can Geronimo get him back to his herd before he causes a megalithic disaster?

Squeak is very afraid of the ginger cat, but the lure of chocolate cake brings him out of his hole.

When you're with Geronimo Stilton, it's always a fabumouse adventure! My family and I, Geronimo Stilton, were invited to Lisbon, Portugal, to retrace the journey of the great explorer Vasco da Gama. He was the first European to reach India by sea -- and was apparently an ancestor of the Stiltons! But once we got on the boat, I learned that someone was trying to sabotage the voyage. Could I figure out who?