A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Moths are unable to fly during an earthquake.
328
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Condoms were originally made of animal intestines or linen.
347
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1