Yes, wolves do eat foxes on occasion. However, this behavior is not their primary dietary choice.
Wolves are opportunistic carnivores, meaning they will hunt and consume various animals depending on availability and situation. Their primary prey includes larger ungulates such as deer, moose, and elk. However, if food is scarce or if a wolf pack is particularly hungry, they might target smaller animals, including foxes.
Foxes, being significantly smaller than wolves, may find themselves at risk, especially if they are weakened or if they encroach on wolf territory. That said, encounters between wolves and foxes are not always predatory; sometimes, wolves may not chase foxes at all unless driven by hunger or competition for food resources.
In essence, while wolves can and do eat foxes, it’s typically not a common behavior and occurs under specific circumstances.