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Old March 17th, 2007, 01:19 PM
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technodoll technodoll is offline
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The Comparative Anatomy of Eating

a fascinating read, recommended for anyone who wants food for thought

http://www.geocities.com/RainForest/2062/ana.HTML

Quote:
Summary
Facial Muscles
CARNIVORE: Reduced to allow wide mouth gape
HERBIVORE: Well-developed
OMNIVORE: Reduced
HUMAN: Well-developed

Jaw Type

CARNIVORE: Angle not expanded
HERBIVORE: Expanded angle
OMNIVORE: Angle not expanded
HUMAN: Expanded angle

Jaw Joint Location

CARNIVORE: On same plane as molar teeth
HERBIVORE: Above the plane of the molars
OMNIVORE: On same plane as molar teeth
HUMAN: Above the plane of the molars

Jaw Motion

CARNIVORE: Shearing; minimal side-to-side motion
HERBIVORE: No shear; good side-to-side, front-to-back
OMNIVORE: Shearing; minimal side-to-side
HUMAN: No shear; good side-to-side, front-to-back

Major Jaw Muscles

CARNIVORE: Temporalis
HERBIVORE: Masseter and pterygoids
OMNIVORE: Temporalis
HUMAN: Masseter and pterygoids

Mouth Opening vs. Head Size

CARNIVORE: Large
HERBIVORE: Small
OMNIVORE: Large
HUMAN: Small

Teeth: Incisors

CARNIVORE: Short and pointed
HERBIVORE: Broad, flattened and spade shaped
OMNIVORE: Short and pointed
HUMAN: Broad, flattened and spade shaped

Teeth: Canines

CARNIVORE: Long, sharp and curved
HERBIVORE: Dull and short or long (for defense), or none
OMNIVORE: Long, sharp and curved
HUMAN: Short and blunted

Teeth: Molars

CARNIVORE: Sharp, jagged and blade shaped
HERBIVORE: Flattened with cusps vs complex surface
OMNIVORE: Sharp blades and/or flattened
HUMAN: Flattened with nodular cusps

Chewing

CARNIVORE: None; swallows food whole
HERBIVORE: Extensive chewing necessary
OMNIVORE: Swallows food whole and/or simple crushing
HUMAN: Extensive chewing necessary

Saliva

CARNIVORE: No digestive enzymes
HERBIVORE: Carbohydrate digesting enzymes
OMNIVORE: No digestive enzymes
HUMAN: Carbohydrate digesting enzymes

Stomach Type

CARNIVORE: Simple
HERBIVORE: Simple or multiple chambers
OMNIVORE: Simple
HUMAN: Simple

Stomach Acidity

CARNIVORE: Less than or equal to pH 1 with food in stomach
HERBIVORE: pH 4 to 5 with food in stomach
OMNIVORE: Less than or equal to pH 1 with food in stomach
HUMAN: pH 4 to 5 with food in stomach

Stomach Capacity

CARNIVORE: 60% to 70% of total volume of digestive tract
HERBIVORE: Less than 30% of total volume of digestive tract
OMNIVORE: 60% to 70% of total volume of digestive tract
HUMAN: 21% to 27% of total volume of digestive tract

Length of Small Intestine

CARNIVORE: 3 to 6 times body length
HERBIVORE: 10 to more than 12 times body length
OMNIVORE: 4 to 6 times body length
HUMAN: 10 to 11 times body length

Colon

CARNIVORE: Simple, short and smooth
HERBIVORE: Long, complex; may be sacculated
OMNIVORE: Simple, short and smooth
HUMAN: Long, sacculated

Liver

CARNIVORE: Can detoxify vitamin A
HERBIVORE: Cannot detoxify vitamin A
OMNIVORE: Can detoxify vitamin A
HUMAN: Cannot detoxify vitamin A

Kidney

CARNIVORE: Extremely concentrated urine
HERBIVORE: Moderately concentrated urine
OMNIVORE: Extremely concentrated urine
HUMAN: Moderately concentrated urine

Nails

CARNIVORE: Sharp claws
HERBIVORE: Flattened nails or blunt hooves
OMNIVORE: Sharp claws
HUMAN: Flattened nails
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Old March 17th, 2007, 02:41 PM
~michelle~ ~michelle~ is offline
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awesome post TD, this is the stuff that i mentioned when we had the vegetarian dog discussion, i just couldnt quote it the exacts of it
thanks so much for posting i think its a great educational too to be on here
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Old March 17th, 2007, 04:17 PM
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technodoll technodoll is offline
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michelle i'm glad you found it useful!
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Take nothing but pictures, leave nothing but footprints.

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Old March 17th, 2007, 05:03 PM
LL1 LL1 is offline
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Interesting for humans too.
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Old March 17th, 2007, 05:32 PM
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Very interesting indeed. Thanks for posting.
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Old March 17th, 2007, 10:57 PM
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angeldogs angeldogs is offline
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Interesting indeed.thanks for posting.
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