It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
Cats and dogs can hear ultrasound.
350
Squirrels forget where they hide about half of their nuts.
698