Brain-body mass ratio for some animals diagram
Body weight (kg)
Brain weight (g)
Shrew
Bat
Shrew
Mouse
Mouse
Rat
Squirrel
Hedgehog
Cat
Rhesus monkey
Dog
Chimpanzee
Man
Pig
Horse
Hippopotamus
Blue whale
Spermwhale
Dusky dolphin
African elephant
0.0001
0.01
1
100
10 000
1 000 000
10 000
1 000
100
10
1
0.1