Here's why:
* Primary Consumers: These organisms are herbivores, meaning they eat plants. Cows fit this category because they eat grass.
* Secondary Consumers: These organisms are carnivores or omnivores who eat other animals. They consume primary consumers (herbivores). Examples of secondary consumers are foxes, wolves, and some birds of prey.
Therefore, a cow eating grass is a classic example of a primary consumer, not a secondary consumer.