The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Domestic pigs average a top speed of about 11 miles per hour.
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