The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The octopus does not have a blind spot.
273
Alligators can live up to 100 years.
337
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
Dogs have been man's pet for over 14,000 years.
224
