Penguins have a gland above their eye that turns saltwater into freshwater.
12
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Cows can sleep standing up, but they can only dream lying down.
745
Dogs sometimes fake being sick to get attention.
26
Tigers can see 6 times better at night than humans.
305