No one knows the answer to that except scientists. I think that they aren't yellow because nature wanted them to be black and white.
Grass contains carotenoids, which makes the fat, milk, cream, and butter from grass-fed cows yellow. Fat from cows fed indoors, on grain or grain-based pellets, is white.
Their waste is made up of grass and hay
No, not at all. There are mustard-coloured cows, but they're not really called mustard-coloured, but rather yellow, dun or buckskin.
Two primary colours: blue and yellow.
See, cows that only eat mango leaves urine and the people wait until the urine is dried then it becomes yellow.
Butter gets its yellow color from the natural pigment called beta-carotene, which is found in the grass that cows eat.
20million dallars..btws they have yellow spots..:)
Black, brown, red, white, grey, yellow, orange, and a combination of all seven.
The smell of fresh grass, and their ability to see in yellows and blues (in the colour spectrum, yellow + blue = green). Mostly cows can tell if the grass is green fresh by using their noses.
Yes, but not in the full colour spectrum. Cows only have blue and yellow receptors in their eyes, not the red receptor, thus cannot see red, brown or pink-hued colours or objects. They are however, most attuned to bluish-purple and yellowish-green hues.No. They can only see blue and yellow colour tones.
Yes, at certain times of the year green cows are available in order to celebrate St. Patricks's day. There are some on the market right now, the are called the "Kelly Green Cow." Apart from the game Farmville though, in real life cows are NOT green. They are anything but green, purple, vibrant yellow, true blue and pink.
It can, yes. It's just like when a baby is fed too much carrot baby food their skin turns a kind of yellow. Carrots contain carotene, and if cows are fed too many carrots it can affect the colour (and even possibly the taste) of the milk, turning it into a yellowish tinge.