Fox

Foxes are medium sized, dog-like carnivores that live in dens, in woodland and shrubland. They are solitary animals, mainly active at twilight and at night. They have ginger or reddish-brown coat with a white underside, white tail-tip, black ears and legs, and golden eyes with vertical-slit pupils. Although they do not appear in the Original Series, they make regular appearances later.

Relation to Clan cats
Foxes are dangerous to cats. They are highly territorial, attacking other animals that step on their territory, so even if they don't eat cats, they will likely attack them on sight.

They are usually dealt with by being driven out by the Clan cats, episodes being described in several books. A strong and healthy cat can chase away a fox by himself.

Foxes play a major role in the Clan cats' life. Several cats are named Fox-, like Foxleap or Foxwhisker. They have expressions pertaining to foxes, like fox-length, fox-hearted or fox dung.

Relation to Twolegs
Foxes are troublesome creatures as they steal poultry from around Twoleg nests. Twolegs usually set up traps to catch and kill foxes.

Bluestar's Prophecy
Bluepaw is chased by a fox, but it is stopped by a falling branch. Later, when Bluefur gives her kits to RiverClan, she says they were taken by a fox.

Firestar's Quest
Firestar and Sandstorm chase away a fox to protect a she-cat with kits.

Moonrise
The six questing cats are about to be attacked by a group of territorial foxes, but Midnight convinces them to leave the cats alone.

Starlight
Foxes show up near the Gathering place, but they are chased off by the warriors.

Twilight
Poor little Squirrelflight is nearly killed by a fox, but fortunately Brambleclaw is there and saves her life.

The Sight
A dead fox is found on ThunderClan territory, and the apprentices find the fox cubs.

The Fourth Apprentice
It is revealed that Firestar had lost a life in a fight with a fox.