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| EnchantedLearning.com | The Brain | Human Anatomy |
| Introduction | Structure and Function |
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ANIMAL BRAIN COMPARISONS | |
BRAINS OF VARIOUS ANIMALS
See the Gallery of mammalian brains at the University of Wisconsin.
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
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