http://www.halfbakery.com/idea/Pet_20Fox
http://www.geocities.com/RainForest/4707/pets.htm
http://www.foxes.org/urbanfox/part3.html
http://exoticpets.about.com/cs/fennecfoxes/p/fennecfox.htm
BTW The foxes here have chased our cats and I've seen one up a tree but safe waiting for me to chase the fox off. I have to think they would have a hard time catching one on the ground unless they can corner it somewhere, unable to climb up. Cats can climb and foxes are only barely able to jump as I've observed. So far the cats are ahead 2 - 0.