6 free facts. 94 more inside.

1. 1
   A fish can live inside a sea cucumber.Many sea cucumbers breathe through the anus, and the pearlfish uses that opening as a front door.
2. 2
   A harp seal pup gets only about 12 days of milk.It gains about 5 lb a day on her rich milk, then mom leaves it on the ice.
3. 3
   Emperor penguin dads can fast for about four months.They balance one egg on their feet through the Antarctic winter.
4. 4
   Wild animals fear our voices more than lions.In a South African study, mammals were about twice as likely to run from human voices as from lion sounds.
5. 5
   Polar bear cubs stay with mom for about two and a half years.She nurses them in a snow den while living on stored fat.
6. 6
   Scientists once thought the platypus was a hoax.The first specimen sent to Britain looked like a duck's bill sewn onto a mammal.

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