Sheep, goats, octopuses, and toads have rectangular pupils.
7
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
When cats are happy, they may squeeze their eyes shut.
10
Only 3% of bird species have penises.
0
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8