Dogs have been man's pet for over 14,000 years.
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Denmark has twice as many pigs as there are people.
66
Dolphins have names for one another.
18
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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