Cat. doesn't approve.
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Cat

doesn't approve

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Views: 12863
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Submitted: 11/23/2012
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#4 - gigamesh (11/24/2012) [+] (1 reply)
User avatar #5 - mrhumperdoodle (11/24/2012) [-]
that cat looks kinda dissapointed
User avatar #3 - codyxvasco (11/24/2012) [-]
It's face hurt my sides...
User avatar #2 - unkownthous (11/23/2012) [-]
The cat's all like, why did you make me so ugly?! (crys)
#1 - Hightower ONLINE (11/23/2012) [-]
Cats can't taste sweet...
"The tongues of most mammals hold taste receptors—proteins on the cellular surface that bind to an incoming substance, activating the cell's internal workings that lead to a signal being sent to the brain. Humans enjoy five kinds of taste buds (possibly six): sour, bitter, salty, umami (or meatiness) and sweet (as well as possibly fat). The sweet receptor is actually made up of two coupled proteins generated by two separate genes: known as Tas1r2 and Tas1r3.

When working properly, the two genes form the coupled protein and when something sweet enters the mouth the news is rushed to the brain, primarily because sweetness is a sign of rich carbohydrates—an important food source for plant-eaters and the nondiscriminating, like humans. But cats are from the noble lineage Carnivora and, unlike some of its lesser members, such as omnivorous bears or, even more appalling, herbivorous pandas, they exclusively eat meat.

Whether as a result of this dietary choice or the cause of it, all cats—lions, tigers and British longhairs, oh my—lack 247 base pairs of the amino acids that make up the DNA of the Tas1r2 gene. As a result, it does not code for the proper protein, it does not merit the name gene (only pseudogene), and it does not permit cats to taste sweets. "They don't taste sweet the way we do," says Joe Brand, biochemist and associate director at the Monell Chemical Senses Center in Philadelphia. "They're lucky. Cats really have bad teeth as it is.""
http://www.scientificamerican.com/article.cfm?id=strange-but-true-cats-cannot-ta ste-sweets
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