The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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