The elephant brain weighs about 6,000g.
274
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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