Carotene from a grass-based diet. Milk will lack carotene (not be a yellowish colour) if she is fed a grain-based diet.
yes. slightly thicker consistency than cows milk. and is a white-ish grey colour. I think it even fills you up a bit more because of the thickness compared to cows milk.
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.
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.
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, though a bit a more lighter and yellower than the actual colour Orange. These cows are primarily of the breed Charolais. Cows of this colour of this breed are typically called "red-factor Charolais."
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.
Dark Brown to Light Tan
They eat the same things that cows of any other colour eat. Please see the related question below.
Buttercream frosting or icing naturally has a cream colour from the butter in it. The more air beaten into it, the paler it will be, and the softer it will be. The yellow colour of pure butter is naturally stronger if the cows producing the milk are grass fed rather than grain fed. If a pure white frosting or icing is wanted, do not use butter or make a buttercream, but the creamy flavour will be missing.
Their waste is made up of grass and hay
Cows are divided into BREEDS, not species. And what makes each BREED of cows different is colouration, body type and shape, presence of horns or not, and size of horns.
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.