Like other foxes it hunts for it's prey, it's diet is just limited to the animals available.
Will Eat:
Arctic foxes and red foxes will kill and eat ermine occasionally.
Since foxes often prey on raccoons, it is doubtful there is any animal that eats foxes that could be eaten by a raccoon.
Birds of prey and foxes
Foxes do not usually eat mature platypuses, but they do prey on juveniles.
Golden Eagle, Bald Eagle, Vultures and other large birds of prey are known to eat foxes.
Predators.
No, seals mostly prey on fish, not foxes.
Eagles regularly prey on foxes (see image above) as well as some larger predators such as bobcats.
Lions typically do not eat foxes, as they primarily hunt larger prey such as wildebeest, zebras, and other ungulates in their natural habitats. Foxes and lions occupy different ecosystems, with foxes usually found in forests, grasslands, and urban areas. While a lion might eat a smaller animal if food is scarce, it is not a common occurrence for lions to target foxes as prey.
Arctic foxes are omnivores. The arctic fox will generally eat any meat it can find, including lemmings and Arctic Hares
They eat where their prey has been killed, or they take their catch to their earth and eat it there or they just take it away and eat it. They eat almost everywhere.
Birds of prey, foxes, weasels etc. Oh - and people occasionally !