حیوانات و رنگ ها

دوست دارید بدانید سگ ها، گربه ها، موش ها و دیگر حیوانات رنگ ها را چگونه می بینند؟ متن ساده ی زیر را بخوانید:

Dogs, cats, mice, rats and rabbits have very poor color vision
In fact, they see mostly greys and some blues and yellows

What about bulls? Does a red cape make them angry
Does a red cape make them want to attack it


This is what humans see


This is what a bull sees

Bulls are color-blind. They charge the red cape because it is moving, not because it is red


Some animals do have good color vision. Monkeys, ground squirrels, birds, insects, and many fish can see a fairly good range of color. In some cases it's not as good as what we humans see - but it's much better than cats and dogs 

Scientists say that good color vision helps animals find food on the  land or in the water. For land animals, good color vision helps to tell the difference between ripe red fruit and unripe green fruit. Colors can also make animals more attractive to each other when they mate. Finally, the ability to see colors helps animals identify       predators (other animals who may attack them