Only female mosquitoes bite and drink blood.
28
Black bears are not always black. They can be brown, cinnamon, yellow, and sometimes white.
32
The praying mantis is the only insect that can turn its head!
95
Cats and dogs can hear ultrasound.
350
On average, there's 300 billion neurons in the octopus brain.
129
A rodent's teeth never stop growing.
16
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492