PETPI

Some people are so brainwashed, and/or so stupid, they will actually believe that humans aren't designed to eat meat at all!  Nothing could be further from the truth!  The human body is actually very well equipped for digesting meat and the fat that comes with it, regardless of what the establishment says.

Certain animal rights wackos may suggest that because we don't have sharp claws, we are not meant to eat meat.  However, we don't need sharp claws to eat meat.  We have great intelligence and ability to use tools.  Certain other primates can also use tools.  Our tools are just far more complex.  To make up for our lack of sharp claws, we have the ability to use weapons such as knives, bows and arrows, and firearms.  While we're still on the topic of claws, note that some meat eaters don't have claws, or don't use them to attack their prey.  For example, sharks have no claws, and cats use their claws primarily for traction and for climbing trees and wicker furniture.  If for some reason, you don't believe it is natural to use tools, here are just a few animal foods a human can eat without using any tools or processing whatsoever:  Eggs, insects, young birds, squirrels, small lizards, and the list goes on.

Despite what some people might say, the human mouth is very well designed fer consuming meat.  Sure, the canines may be a little small, but in practice, they work quite well for tearing meat.  Humans do have molars, like other plant eaters, but they are relatively rough and jagged as opposed to most herbivores.  In addition, the jaw moves in a primarily shearing (up and down) motion, like in other meat-eaters, with very limited side-to-side motion.  The human jaw is also very powerful, and can can tear through flesh, and even some bones, without much difficulty.  On the other hand, herbivores such as cows have jaws that move in a distinctive circular pattern, and they grind their food (grass) for a long time.  Humans just bite off a chunk of food and chew for a few seconds, rather than a few minutes, and then swallow.

The human stomach is virtually identical to that of most carnivores and omnivores.  When food enters, the stomach produces a highly corrosive solution of mostly hydrochloric acid, which produces an extremely acidic environment with a pH of 1 to 2 which dissolves and liquefies even the toughest steak and just about 3 to 4 hours, or just 1 to 2 hours, if the steak is raw, quickly reducing it to its constituent nutrients.  The acid plays a dual role: Not only does it liquefy any food that goes in, it also kills dangerous microorganisms (bacteria and viruses) and parasites to prevent them from causing harm.  The human stomach is also single chamber.  By comparison, the stomach of a herbivore, such as a cow, contains four chambers, and any acid it produces is far weaker than the acid in a human stomach.  By an additional comparison, the stomach of a horse or a gorilla is single chamber, with microorganisms instead of strong acid, but these animals have very large, specialized colons, which I will explain later.  For now, suffice it to say that any herbivore will have either a multi-chambered stomach, or a large, specialized colon.  Humans have neither.

Further evidence of our meat-eating nature can be found in the length of our intestines.  Herbivores have very long intestines, enabling them to absorb as many nutrients as possible from low density plant sources.  Their intestines are generally 10 to over 25 times the body length!   Carnivores, on the other hand, have much shorter intestines, due to the high nutrient density of animal products such as meat and organs.  Carnivore intestines are generally 2 to 6 times their body length.  Human intestines are generally 18 to 30 feet long.  I am a little over 6 ft tall.  That would make my intestines a little less than 3 to 5 times my body length (or height), right in the carnivore range.
    One common myth that vegetarians like to spread is that meat rots in the intestines, causing disease.  This is false.  Any bacteria are destroyed in the stomach, and those that do survive the stomach are usually unable to survive in the small intestine either, due to the fact that they are made of protein.

Back to what I was saying about the colons of horses and gorillas, these animals' colons are very large and and capable of absorbing nutrients.  On the other hand, human colons, like the colons of most omnivores and carnivores, are relatively small, and they can absorb only water.

Some people at a certain organization (PETA, for those who are curious), believe that while carnivorous animals are aroused by the smell of blood and the thrill of the chase, and enjoy killing and eating their prey raw, humans are naturally revolted at the sight of raw flesh and can't tolerate the screams an animal makes as it's being ripped apart.  What I say is "Speak for yourself!"  I personally like the smell of animal blood, and I'm not grossed out by skinned or partially-eaten animals.  As for eating raw meat, I ran polls on two web forums, one of which is completely unrelated to the issue in any way, shape or form.  The question is "Have you ever eaten raw meat?"  Here are the results.

Have you ever eaten raw meat?	Peta-Sucks.com Web forum	RMXP.org Web forum
Yes. It is delicious.	9 - 37.5%	16 - 34.78%
Yes. It is OK.	4 - 16.7%	9 - 19.57%
Yes. I don't like it.	1 - 4.2%	3 - 6.52%
No, and I never will.	6 - 25.0%	10 - 21.74%
No, but I might if someone dares me to.	3 - 12.5%	3 - 6.52%
No, but I would like to try it.	0 - 0.0%	2 - 4.35%
I don't know / remember.	1 - 4.2%	3 - 6.52%

My interpretation of the results is that many people were afraid to try it, but the majority of those who did liked it.
So much for our "natural disgust" of raw meat.

Animals, depending on their diets, have different bitter taste rejection thresholds (How much bitterness they can stand before spitting the food out).  Plants generally contains large amounts of bitter chemicals, so herbivores can generally stand high bitterness levels.  On the other hand, carnivores are far less likely to encounter bitter taste, so their rejection thresholds are much lower.  Here's a chart, which I found on BeyondVeg.com.  It displays the quinine hydrochloride taste tolerance threshold levels of humans, compared to certain animal groups.  The chart came in scientific notation, but I am also using regular notation, for those who don't understand scientific.

Trophic Group	QTT (Sci. Notation)	QTT (Standard)
Carnivores	2.1 x 10^-5 M	0.000021 M
Humans	3.0 x 10^-5 M	0.000030 M
Omnivores	3.0 x 10^-4 M	0.000300 M
Herbivores (Grazers)	6.7 x 10^-4 M	0.000670 M
Herbivores (Browsers)	3.0 x 10^-3 M	0.003000 M

QTT = QHCL Taste threshold
M = moles per liter
1 mole equals 6.02 x 10^23 (602,000,000,000,000,000,000,000!!) molecules.

See where humans are?  Between the carnivore threshold and omnivore threshold, but much closer to the carnivore threshold!

Herbivorous animals have eyes that face to the side.  This gives them a wide field of view, making it easier to watch for predators.  On the other hand, carnivores have eyes that face forward, enabling them to focus when chasing prey animals.  It also enables them to see depth and judge distances.  Like other predators, we have forward-facing eyes.

Second-Opinions.com
     The Naive Vegetarian
     Comparison Between the Digestive Tracts of a Carnivore, a Herbivore, and Man

BeyondVeg.com
     Chart