Being able to navigate the forest quietly and unseen helps a bear avoid other bears as it searches for food. If a young bear accidentally encounters a large adult male, who could consider the youngster a competitor, the younger animal needs to retreat before being detected. In the forest, bears rely on their acute hearing and super sense of smell. Their noses perceive smells much fainter than humans can detect. With this super sense of smell, they can detect other animals that are near by, and they can find fruit, insect larvae, and the other foods.
Bears can probably see as well as humans can.
They can recognize shapes but not details at a distance, and they observe moving objects better than stationary objects. When you've got to find lots of food on the ground, sharp eyes that see color can come in handy. And that's exactly what the black bear has. Although their night vision is also excellent, bears forage for fruit during the day when they can perceive colors. Brown bears and polar bears are the biggest bears.