Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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A 42-foot sperm whale has about 7 tons of oil in it.
209
Female kangaroos have three vaginas.
2
Mosquitoes don't just bite you, they also pee on you.
11
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
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8