Most elephants weigh less than a blue whale's tongue.
442
Sex burns about 360 calories per hour.
860
One human hair can support 3 ounces.
191
The cat brain weighs about 30g.
167
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
By weight, Bone is five times stronger than steel.
417
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99