When you shave a guinea pig it looks like a little hippo.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The elephant brain weighs about 6,000g.
274
Denmark has twice as many pigs as there are people.
66
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
There are approximately three chickens for every human on Earth.
13
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20