Run Wild, book 3: Run Swift, Run FreeTom McCaughren1990

Summer has arrived in the Land of Sinna, and Black Tip and Vickey's cubs are growing up. Life is very exciting but it's also hard - the cubs have to learn the ways of the wild, how to stand up to other hunters and how to defeat their enemy, the trapper. With the help of all their friends in the valley, especially the wise old blind fox, Old Sage Brush, the young foxes learn to survive - but will they be able to fend for themselves, and run swift, run free?