When dragonflies mate, their tails form a love heart.
22
The elephant brain weighs about 6,000g.
274
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Penguins have a gland above their eye that turns saltwater into freshwater.
12
The most expensive cow in the world was sold in 2009 for $1.2 million.
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