The Red Fox is built lightly, being half as massive as other canids of equal size with bones narrower and the limb bones particularly being built much more finely.
Body mass is further reduced by a large stomach; half as large again as other canines. This reduction of weight allows a fox to run extremely quickly and be very agile, trotting speeds between 6-13 km/h and running speeds up to 72 km/h having been cited. Foxes are also very good swimmers and their long hind legs give them a tremendous leaping ability – as much as 2m vertically.
The fox being smaller and more energetic must eat more frequently than say a pet dog. It is omnivorous with prominent canines which hold prey, incisors for cutting and shearing meat, and molars for grinding up bones and vegetable matter.