Cones are responsible for the differentiation of colour in many animals in conditions of greater light intensity. Many insects have good colour vision whereas dogs and other mammals have limited colour vision and probably see in yellows and blues. Many insects can see into the ultraviolet spectrum which the unaided human eye can not. Many flowers emit patterns of ultraviolet light which are visible to insects but not to humans. Flowers which are pollinated by insects tend to have flowers with white, yellow, orange or blue flowers.
Butterflies are probably the only insects which can detect red as a colour.
Many fish which swim near the surface have colour vision while those in the ocean deep where it is dark do not. Most primate species, except for those which are primarily nocturnal, also have colour vision as do many birds. Because birds are descended from dinosaurs it is thought that dinosaurs may also have had colour vision. Colour is strongly associated with different emotional states though this can vary from culture to culture. For example, 'green with envy', 'blue' or 'the baby blues', and 'yellow' for being afraid.