Serendip is an independent site partnering with faculty at multiple colleges and universities around the world. Happy exploring!

Brain and Body Size Chart

Chart of Approximate Brain and Body Sizes of Various Animals

Species	Brain Length (cm)	Brain Weight (g)	Body Length (cm)	Body Weight (g)
Human	15	1,400	100	62,000
Baboon	8	140	120	30,000
Monkey	5	180	30	6,800
Camel	15	680	200	529,000
Dolphin	--	1,700	300	160,000
Kangaroo	5	56	150	35,000
Cat	5	30	60	3,300
Raccoon	5.5	39	80	4,290
Rabbit	5	12	30	2,500
Squirrel	3	6	20	900
Frog	2	0.1	10	18

Comments

Sources

Submitted by François-Nicolas Pelletier (guest) on Wed, 07/08/2015 - 10:12am.

Hi,

Great chart by the way, same with the proportion options, well done.

You look like a credible bunch at Serendip Studio, but I'd love to know the sources for this chart -- always a good practice to show them anyway. I'm thinking of using it in an educational setting, but I couldn't if my only source is "a neat website" if you see what I mean.

Thanks and keep up the good work

FNP

Percentages

Submitted by Julie G. on Thu, 12/15/2011 - 10:31am.

Speaking of brains, mine can only comprehend difference in size per animal by percentages, so here goes:

ANIMAL	BRAIN WEIGHT (g)	BODY WEIGHT (g)	BRAIN'S PERCENTAGE OF BODY	RANK IN PERCENTAGE (high to low)
Human	1,400	62,000	2.258%	2
Baboon	140	30,000	0.466%	8
Monkey	180	6,800	2.647%	1
Camel	680	529,000	0.129%	10
Dolphin	1,700	160,000	1.063%	3
Kangaroo	56	35,000	0.160%	9
Cat	30	3,300	0.909%	4
Raccoon	39	4,290	0.909%	4
Rabbit	12	2,500	0.480%	7
Squirrel	6	900	0.666%	5
Frog	0.1	18	0.555%	6