The oldest recorded elephant lived for 82 years.
213
Cats recognise the voice of their owner, but never evolved to care.
22
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The most expensive cow in the world was sold in 2009 for $1.2 million.
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