Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The elephant brain weighs about 6,000g.
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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
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
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