A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
Cats sleep for 70% of their lives.
8
Cats and dogs can hear ultrasound.
350
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6