Spiders have transparent blood.
56
A dragonfly has a lifespan of 24 hours.
24
Under extreme stress, some octopuses will eat their own arms.
198
Humans and dolphins are the only species that have sex for pleasure.
61
Camels have three eyelids to protect themselves from blowing sand!
30
The world's smallest mammal is the bumblebee bat of Thailand, weighing less than a penny.
60
A hummingbird weighs less than a penny.
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