A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Domestic pigs average a top speed of about 11 miles per hour.
182
Condoms were originally made of animal intestines or linen.
347