The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
The elephant brain weighs about 6,000g.
274
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23