Giant foxes were once used as mounts by Elves. The elves of Redtooth Keep are cursed to become werefoxes at night.
In Aevira's Heart, foxes feed massive serpents becoming giants. The fox is also the symbol for Bassara Tower, a watchtower near the Summer Nexus.
On expeditions through Ashmouth, the hunters of Devilthorn Lodge rely on the cleverness of foxes to counteract the mischief of devils.