Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Rattlesnake mating sessions have been known to last more than 22 hours.
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It has been scientifically proven that stroking a cat can lower one's blood pressure!
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Cats and dogs can hear ultrasound.
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