Thsi book teaches children that even the smallest creatures can do great deeds. It is a new addition to the popular Silver Penny series. It is suitable for children aged 3 to 6. Could a tiny mouse actually help the king of the jungle? That's what a trapped mouse promises to do if his lion captor sets him free. The lion laughs-and lets him go. But when hunters trap the scared and desperate lion, the mouse proves that even the smallest creatures can do great deeds.