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Body-Related Books to Print EnchantedLearning.com
Human Anatomy
Anatomy Index
Brain Digestive System Ears Eyes Heart Lungs Skeleton Skin Teeth Urinary System Classroom
Activities

The Brain
Introduction Structure
and Function
Brain Cells Spinal Cord Animal Brain
Comparisons
Glossary Classroom Activities
and Links
Human brain ANIMAL BRAIN COMPARISONS Human brain

BRAINS OF VARIOUS ANIMALS
ANIMAL BRAIN WEIGHT (G) BODY WEIGHT % OF BODY WEIGHT NUMBER OF NEURONS
SPERM WHALE 7800 g 15 tons=30,000 pounds= 13500 kg 0.06 %  
ELEPHANT 6000      
BOTTLE-NOSED DOLPHIN 1500 g 500 kg 0.3 %  
HUMAN ADULT 1300-1400 150 pounds= 68 kg=68000 g 2 % 100 Billion
HORSE 532      
CHIMPANZEE 420      
HUMAN BABY 350 - 400      
DOG (BEAGLE) 72 9 to 18 kg 0.5 %  
CAT 30      
SQUIRREL 22      
ALLIGATOR 8.4 250 kg 0.003 %  
OWL 2.2      
RAT 2 400 gm 0.5 %  
TURTLE 0.3      
VIPER 0.1      
GREEN LIZARD 0.08      

See the Gallery of mammalian brains at the University of Wisconsin.


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