As carnivores, their eyes are set relatively close together and face forward. This provides them with excellent depth perception and with the ability to track moving prey. Researchers have observed that bears are capable of detecting very small movements from several hundred yards away. Bears have some form of colour vision or at least the ability to respond to different colour shadings. Also, the fact that bears are able to forage both during daylight and at night is another sign of good functional eyesight.
Bears also demonstrate excellent hearing.
Their keen sense of smell is legendary and is often said to be comparable to that of a bloodhound. While initial observations of this behaviour were used to postulate poor eyesight in bears, it now appears that, as an extremely successful survival mechanism, bears prefer whenever possible to use all three of their highly developed sensory modalities - namely smell, eyesight and hearing. Intelligence Humankind does not have, at present, an understanding of how to measure bear intelligence. This curiosity extends far beyond the search for food. Rather, it appears to apply to virtually any new object or event within their environment.