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[Il Palazzo]

Cow and the like dont see in black and white, they actually have blue and yellow receptor.

Basically, yeah. This goes for a lot (most?) mammals, including dogs and cats. They just have two distinct color receptors instead of three, sort of like a person with red-green colorblindness.

Remember that two colour receptors is enough to perceive colours. It only causes some colours to be undistinguishable from each other.
On the other hand, lets not forget about most of the marine mammals who only see in shades of grey.

Speaking of most mammals and interesting facts, have anybody mentioned the penis bone yet?

[G-Flex]

Judging by what Wikipedia says, the only trichromatic mammals tend to be many of the marsupials, and some (but not nearly all) primates.

——————☆
the more you know

Remember that two colour receptors is enough to perceive colours. It only causes some colours to be undistinguishable from each other.

More importantly, keep in mind that "color" is completely subjective to begin with; the meaning of "red" and "yellow" and "purple" rest entirely upon how our color vision works.

[MetalSlimeHunt]

Some birds and sea life have tetrachromatic vision, or so I heard. I wish we could comprehend what that would look like.

[GlyphGryph]

Milk chocolate probably won't hurt a dog unless it engorges itself, baking chocolate is the killer.

To be fair, the vast majority of humans avoid baking chocolate like the plauge because of how bitter it is. I'm not sure how dogs respond to it, although I do know that dogs supposidly like the taste of antifreeze, so I can't really assume anything on the matter.

This is because antifreeze is actually absolutely delicious, even to people! Its dangerous to have around kids as well for the same reason.

Also baking chocolate is the most delicious chocolate, man, milk chocolate tastes like crap. Mmmm.... 87% cacao...

[Il Palazzo]

Some birds and sea life have tetrachromatic vision, or so I heard. I wish we could comprehend what that would look like.

Some humans do have tetrachromatic vision - I think it's women only, and just about 10% of them.

If you want some outlandish visuals, imagine being a mantis shrimp - 12 different types of cones, plus light polarization receptors.

[Mysteriousbluepuppet]

Milk chocolate probably won't hurt a dog unless it engorges itself, baking chocolate is the killer.

To be fair, the vast majority of humans avoid baking chocolate like the plauge because of how bitter it is. I'm not sure how dogs respond to it, although I do know that dogs supposidly like the taste of antifreeze, so I can't really assume anything on the matter.

This is because antifreeze is actually absolutely delicious, even to people! Its dangerous to have around kids as well for the same reason.

Also baking chocolate is the most delicious chocolate, man, milk chocolate tastes like crap. Mmmm.... 87% cacao...

Its sugary, and also an Alcohol ! Includes delirium and projectile vomiting, but still.

[Puzzlemaker]

My dog died from ingesting alchohol.

[forsaken1111]

Cow and the like dont see in black and white, they actually have blue and yellow receptor.

How can they see the grass?!

They have BLUE and YELLOW receptors.

Blue + Yellow = Green

ALL THEY SEE IS GRASS

[ed boy]

How can you have a yellow receptor? I was under the impression that light was done in terms of red, green and blue.

[ToonyMan]

Lights done in Cyan, Magenta, and Yellow.

[Darvi]

Light is composed of every color actually. Or at least white light is. Humans just have RGB receptors. No idea 'bout cows though.

[forsaken1111]

How can you have a yellow receptor? I was under the impression that light was done in terms of red, green and blue.

"Light" is a tiny piece of the spectrum of electromagnetic radiation which our eyes are attuned to via cells that react to specific frequencies. There is no universal constant or law (that I'm aware of) that says visible light must be broken into red/green/blue, that's just how we perceive the visible spectrum. Cows apparently see it differently.

[sonerohi]

The human body can only digest 1 milligram of gum at a time, and takes 209 years per milligram.

[G-Flex]

How can you have a yellow receptor? I was under the impression that light was done in terms of red, green and blue.

Human color receptors roughly correspond to red, green, and blue. That's why color theory uses them; because every human-visible color (roughly) can be approximated using those components due to those being the components our eyes have.

By "yellow receptor", what is meant is that the receptor's sensitivity is centered roughly on a frequency that we perceive as yellow.

Lights done in Cyan, Magenta, and Yellow.

No, that's pigments, because pigments use subtractive color. In that case, even, it's still because humans see light in red, green, and blue components.

The primary colors of additive synthesis (i.e. mixing frequencies of light) are red, green, and blue. The primary colors of subtractive (i.e. mixing pigments) are cyan, yellow, and magenta. The secondary colors of each are the primary colors of the other.

[forsaken1111]

No, that's pigments, because pigments use subtractive color. In that case, even, it's still because humans see light in red, green, and blue components.

The primary colors of additive synthesis (i.e. mixing frequencies of light) are red, green, and blue. The primary colors of subtractive (i.e. mixing pigments) are cyan, yellow, and magenta. The secondary colors of each are the primary colors of the other.

Yep. And none of that matters to a cat or a cow, because they have different receptors so they respond to different frequencies of light.