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Do bulls see red color

Updated: 8/10/2023
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12y ago

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No.

There is a good journal article at the link below that suggests that cattle may be able to distinguish long wavelength light from short wavelength light. The color red has a wavelength of 650 nm. They may not appreciate the image of a high definition color picture but they probably see color well enough to know the difference between green grass and the red cape that the fool is waving.

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12y ago
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7y ago

Yes and no. Just because a bovine (including a bull) cannot see reddish hues doesn't exactly make them colour blind. Cattle only have two colour receptors in their eyes, not three like us humans have, thus enabling them to see in blues, greens and yellows. However, the hues that cattle are the most sensitive to are yellowish green and bluish purple.

By definition, what makes a person or animal colour blind is when they cannot see the entire visible colour spectrum. Because of this and because of the reasons mentioned above, we need to be careful about saying if indeed cattle are colour blind. Hence the yes and no answer.

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12y ago

That is the point; the bull cannot see the colour red at all, so it will not charge an object just because the object is red. A bull charges a waving flag because of its movement, as demonstrated and myth busted by Discovery Channel's Mythbusters: Tory was wearing an all-red jumpsuit and he stood perfectly still in a bullpen while a rangy rodeo bull was put in there with him (with a rodeo clown in the ring to keep Tory safe). The bull did not care that Tory was even present, nor even acknowledge his presence. All the bull was concerned about was why he was here and trying to find some way to get out of the pen. Tory then wore other different colours besides red, like blue, yellow, etc., and stood still in the bullpen while the bull was in there with him. The Mythbusters crew noticed the same behaviour by the bull. Now when Tory or the rodeo clown suddenly made a movement, that got the bull's attention, and the bull came after that person or cape or whatever object that created the movement.

It should not be assumed that since a bull does not charge at the colour red but at the movement he is colour blind, because this in itself is not true. Cattle, like all other grazing animals, are only blind to the colour red, but they can see hues that range from yellowish green to bluish purple. Since bulls are cattle and cattle are prey animals, they tend respond to movement because they are designed to detect motion. To a prey animal, vision is the most important sense, and because of this they are able to detect sudden movement sooner than a human can. Prey animals are sensitive to sudden movement as it is often a sign of approaching danger. Fighting bulls respond to the sudden movement of the cape because of this instinctual behaviour that has been enhanced through artificial selection to create a breed of cattle that are "great fighters" in the bull-fighting arena.

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13y ago

No.

This is a myth. Bulls are colourblind, it is the waving of the red cloth that angers them.The waving motion is what makes them angry.

In Spain, bullfighters use purple capes.

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15y ago

Bulls are not blind but they may be color blind. It is not the color red that angers them but it is the movement that the cape makes as the bull fighter waves it back and forth.

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