The most expensive cow in the world was sold in 2009 for $1.2 million.
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The elephant brain weighs about 6,000g.
274
Bats sleep 18-20 hours per day.
5
Sloths take two weeks to digest their food.
243
Squirrels forget where they hide about half of their nuts.
698
Nicole Kidman is scared of butterflies.
65
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
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