The elephant brain weighs about 6,000g.
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The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Sloths take two weeks to digest their food.
243
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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