What term describes an animal that will consume whatever food is available?

The term that best describes an animal that will consume whatever food is available is "opportunist." Opportunistic feeders do not have a specific diet and adapt their eating habits to take advantage of whatever food sources are most accessible at any given time. This flexibility allows them to thrive in various environments and situations where food resources fluctuate.

In contrast, an omnivore specifically consumes both plant and animal materials but does not necessarily eat whatever is available; their diet will include certain preferences. Herbivores are defined strictly as animals that predominantly eat plant material, while carnivores are those that primarily consume meat. Therefore, these terms are more restricted in their dietary habits compared to the broader and more adaptable nature of opportunistic feeders.