The cat brain weighs about 30g.
167
Sex burns about 360 calories per hour.
860
One human hair can support 3 ounces.
191
The earth is approx. 6,588,000,000,000,000,000 tons.
175
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Most elephants weigh less than a blue whale's tongue.
442
A hummingbird weighs less than a penny.
1k
By weight, Bone is five times stronger than steel.
417