What tropical rainforest animals eat plants and meat?

In a stable ecosystem (like a rain forest), there will usually be fewer predators/meat eaters than prey/plant eaters, because the higher up you are on the food chain, the fewer of you there will be; If there were fewer prey animals than predators, they would all be eaten quickly, and the predators would starve and the ecosystem would break down. But if there are more prey animals than predators, the prey animals will live long enough to reproduce and keep the population stable, the predators will still have food and the ecosystem will stabilize.