Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
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There are approximately three chickens for every human on Earth.
13
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
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
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