There's a rare breed of pig that looks like a sheep.
14
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Dogs sometimes fake being sick to get attention.
26
A 42-foot sperm whale has about 7 tons of oil in it.
209
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21