Fox is a common name for many species of carnivorous mammals belonging to the Canidae family. Foxes are small to medium-sized canids (slightly smaller than the median-sized domestic dog), characterized by possessing a long narrow snout, and a bushy tail (or brush).

In the wild, foxes can live for up to 10 years, but most foxes only live for 2 to 3 years due to hunting, road accidents and diseases. Foxes are generally smaller than other members of the family Canidae such as wolves, jackals, and domestic dogs. Reynards(male foxes) weigh on average, 5.9 kilograms (13 lb) and vixens (female foxes) weigh less, at around 5.2 kilograms (11.5 lb). Fox-like features typically include a distinctive muzzle (a "fox face") and bushy tail. Other physical characteristics vary according to habitat.

Foxes are omnivores. The diet of foxes is largely made up of invertebrates. However, it also includes rodents, rabbits and other small mammals, reptiles, (such as snakes), amphibians, grasses, berries, fruit, fish, birds, eggs, dung beetles and all other kinds of small animals. Most species of fox generally consume around 1 kg of food every day. Foxes cache excess food, burying it for later consumption, usually under leaves, snow, or soil.