The colossal squid has the largest eyes in the world.
4
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
A lion in the wild usually makes no more than twenty kills a year.
186
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Lobsters have blue blood.
476
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402