Here's why:
* Diet: Cows are herbivores, meaning they eat plants. Their digestive system is designed to break down grasses, hay, and other vegetation.
* Predator/Prey: Foxes are predators, and cows are their prey. Foxes might occasionally hunt and kill young or weak calves, but they wouldn't eat a full-grown cow.
While cows might be curious about a fox, they wouldn't consider it as food.