Here's why:
* Foxes are carnivores: Carnivores primarily eat meat. They have specialized digestive systems designed for breaking down animal protein, not plant matter.
* Grass is not a significant food source for foxes: While foxes might occasionally nibble on grass, it's not a primary food source. They don't have the digestive enzymes to efficiently break down cellulose, the main component of grass.
* Mice are a key prey for foxes: Mice, along with other small mammals, birds, and insects, are essential components of a fox's diet. These animals provide the necessary nutrients and energy for foxes to survive.
In summary: The statement is incorrect because it suggests that grass is equally important to mice in a fox's diet. In reality, foxes are primarily carnivorous and rely on animal prey like mice for sustenance.