Omnivores are organisms that consume both plant and animal matter as part of their diet. This dietary flexibility allows them to adapt to various environments and food availability. Common examples of omnivores include humans, bears, and pigs. Their digestive systems are equipped to process a wide range of foods, enabling them to extract nutrients from both sources. Omnivores play a crucial role in ecosystems by helping to control populations of plants and animals, contributing to the balance of their habitats.