How do animals see the world? - A Week in Science

How does vision in cats, dogs and birds differ to humans? This week Kiran investigates sight in the animal kingdom, including colours, infrared and UV vision.

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[stephaniesmith]

And then there is the mantis shrimp, which has 16 different colour receptors, when we only have three :D

[twocsies]

Interesting video.
2:00 Although reindeer might use UV light to spot the polar bear, I think the polar bear wins because he can smell reindeer up to 20 miles away!

[InsaneAthletix]

As far as I know, the human eye doesn't see the blue color. The brain extrapolates how "blue" something is from the information coming from the red and green channels from the eyes.