Condoms were originally made of animal intestines or linen.
347
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Cats sleep for 70% of their lives.
8
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8