Here is a food web of the Koala. As you see, the Koala is an herbivore. The Koala Bear is the primary consumer of this food web. A primary consumer is the animal or thing that eats most of the stuff in the food web. The Koala mainly eats eucalyptus leaves (top left). But on occasions, they eat tree bark(bottom right) and wattle(top right). All the plants that they eat are called producers because they get their energy from the sun. Next, you see the sun. The sun gives energy to plants. The earthworm in the top middle is the decomposer of this food web. The last thing is the Dingo. The Dingo is teritary because he eats the main animal, Koalas.